diff --git a/MemorialHouse/MHApplication/MHApplication/Source/App/SceneDelegate.swift b/MemorialHouse/MHApplication/MHApplication/Source/App/SceneDelegate.swift
index 045d3ed6..29fe0dce 100644
--- a/MemorialHouse/MHApplication/MHApplication/Source/App/SceneDelegate.swift
+++ b/MemorialHouse/MHApplication/MHApplication/Source/App/SceneDelegate.swift
@@ -73,11 +73,12 @@ final class SceneDelegate: UIResponder, UIWindowSceneDelegate {
             try registerUseCaseDependency()
             try registerViewModelFactoryDependency()
         } catch let error as MHCoreError {
-            MHLogger.error("\(error.description)")
+            MHLogger.error(error.description + #function)
         } catch {
-            MHLogger.error("\(error.localizedDescription)")
+            MHLogger.error(error.localizedDescription + #function)
         }
     }
+    
     private func registerStorageDepedency() throws {
         DIContainer.shared.register(CoreDataStorage.self, object: CoreDataStorage())
         
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/View/CreateAudioViewController.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/View/CreateAudioViewController.swift
index 793c592b..6ff5c4c5 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/View/CreateAudioViewController.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/View/CreateAudioViewController.swift
@@ -122,7 +122,7 @@ final class CreateAudioViewController: UIViewController {
         configureAddSubviews()
         configureConstraints()
         configureAddActions()
-        input.send(.viewDidLoad)
+        input.send(.prepareTemporaryAudio)
     }
     
     // MARK: - Setup
@@ -274,19 +274,11 @@ final class CreateAudioViewController: UIViewController {
     
     // MARK: - Helper
     private func requestMicrophonePermission() {
-        let alert = UIAlertController(
-            title: "마이크 권한 필요",
-            message: "설정에서 마이크 권한을 허용해주세요.",
-            preferredStyle: .alert
-        )
-        alert.addAction(UIAlertAction(title: "OK", style: .default) { [weak self] _ in
-            self?.dismiss(animated: true)
-        })
         Task {
             AVAudioSession.sharedInstance().requestRecordPermission { @Sendable granted in
                 Task { @MainActor in
                     if !granted {
-                        self.present(alert, animated: true, completion: nil)
+                        self.showRedirectSettingAlert(with: .audio)
                     }
                 }
             }
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/ViewModel/CreateAudioViewModel.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/ViewModel/CreateAudioViewModel.swift
index 86c8ae21..e29bbb0a 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/ViewModel/CreateAudioViewModel.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/ViewModel/CreateAudioViewModel.swift
@@ -6,7 +6,7 @@ import MHDomain
 public final class CreateAudioViewModel: ViewModelType {
     // MARK: - Type
     enum Input {
-        case viewDidLoad
+        case prepareTemporaryAudio
         case audioButtonTapped
         case saveButtonTapped
         case recordCancelled
@@ -39,8 +39,8 @@ public final class CreateAudioViewModel: ViewModelType {
     func transform(input: AnyPublisher<Input, Never>) -> AnyPublisher<Output, Never> {
         input.sink { [weak self] event in
             switch event {
-            case .viewDidLoad:
-                Task { await self?.viewDidLoad() }
+            case .prepareTemporaryAudio:
+                Task { await self?.prepareTemporaryAudio() }
             case .audioButtonTapped:
                 self?.audioButtonTapped()
             case .saveButtonTapped:
@@ -54,14 +54,14 @@ public final class CreateAudioViewModel: ViewModelType {
     }
     
     // MARK: - Helper
-    private func viewDidLoad() async {
+    private func prepareTemporaryAudio() async {
         let mediaDescription = MediaDescription(type: .audio)
         self.mediaDescription = mediaDescription
         do {
             let url = try await temporaryStoreMediaUsecase.execute(media: mediaDescription)
             output.send(.audioFileURL(url: url))
         } catch {
-            MHLogger.error("Error in store audio file url: \(error.localizedDescription)")
+            MHLogger.error(error.localizedDescription + #function)
             completion(nil)
             output.send(.recordCompleted)
         }
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/ViewModel/CreateAudioViewModelFactory.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/ViewModel/CreateAudioViewModelFactory.swift
index 0e6c6f16..d8eefe8c 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/ViewModel/CreateAudioViewModelFactory.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/Audio/Audio/ViewModel/CreateAudioViewModelFactory.swift
@@ -15,4 +15,3 @@ public struct CreateAudioViewModelFactory {
             )
     }
 }
-
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Book/View/BookViewController.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Book/View/BookViewController.swift
index 055acad2..2148f586 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/Book/View/BookViewController.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/Book/View/BookViewController.swift
@@ -136,7 +136,7 @@ final class BookViewController: UIViewController {
             let editBookViewController = EditBookViewController(viewModel: editBookViewModel, mode: .modify)
             navigationController?.pushViewController(editBookViewController, animated: true)
         } catch {
-            MHLogger.error(error)
+            MHLogger.error(error.localizedDescription + #function)
         }
     }
 }
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/BookCover/View/BookCoverViewController.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/BookCover/View/BookCoverViewController.swift
index a088a927..71e4305d 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/BookCover/View/BookCoverViewController.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/BookCover/View/BookCoverViewController.swift
@@ -129,7 +129,7 @@ final class BookCoverViewController: UIViewController {
         configureAddSubviews()
         configureConstraints()
         configureAction()
-        createInput.send(.viewDidAppear)
+        createInput.send(.setBookCover)
         modifyInput.send(.loadBookCover)
     }
     
@@ -233,7 +233,7 @@ final class BookCoverViewController: UIViewController {
             let editBookViewController = EditBookViewController(viewModel: editBookViewModel)
             navigationController?.pushViewController(editBookViewController, animated: true)
         } catch {
-            MHLogger.error(error)
+            MHLogger.error(error.localizedDescription + #function)
         }
     }
 }
@@ -489,7 +489,7 @@ extension BookCoverViewController: BookCategoryViewControllerDelegate {
             
             self.present(navigationController, animated: true)
         } catch {
-            MHLogger.error(error)
+            MHLogger.error(error.localizedDescription + #function)
         }
     }
     
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/BookCover/ViewModel/CreateBookCoverViewModel.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/BookCover/ViewModel/CreateBookCoverViewModel.swift
index b5b5a518..0ebc3d88 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/BookCover/ViewModel/CreateBookCoverViewModel.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/BookCover/ViewModel/CreateBookCoverViewModel.swift
@@ -6,7 +6,7 @@ import Photos
 // TODO: - 에러 처리 필요
 final class CreateBookCoverViewModel: ViewModelType {
     enum Input {
-        case viewDidAppear
+        case setBookCover
         case changedBookTitle(title: String?)
         case changedBookColor(colorIndex: Int)
         case changedBookImage(bookImage: Data?)
@@ -60,7 +60,7 @@ final class CreateBookCoverViewModel: ViewModelType {
     func transform(input: AnyPublisher<Input, Never>) -> AnyPublisher<Output, Never> {
         input.sink { [weak self] event in
             switch event {
-            case .viewDidAppear:
+            case .setBookCover:
                 self?.setBookColor(nowIndex: 0)
                 Task { try await self?.fetchMemorialHouseName() }
             case .changedBookTitle(let title):
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Category/BookCategoryTableViewCell.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Category/View/BookCategoryTableViewCell.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Category/BookCategoryTableViewCell.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Category/View/BookCategoryTableViewCell.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Category/BookCategoryViewController.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Category/View/BookCategoryViewController.swift
similarity index 87%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Category/BookCategoryViewController.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Category/View/BookCategoryViewController.swift
index 2b0325c8..800bbac3 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/Category/BookCategoryViewController.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/Category/View/BookCategoryViewController.swift
@@ -41,7 +41,7 @@ final class BookCategoryViewController: UIViewController {
         
         setup()
         bind()
-        input.send(.viewDidLoad)
+        input.send(.fetchCategories)
         configureNavigationBar()
         configureConstraints()
     }
@@ -62,11 +62,13 @@ final class BookCategoryViewController: UIViewController {
     private func bind() {
         let output = viewModel.transform(input: input.eraseToAnyPublisher())
         
-        output.sink { [weak self] event in
+        output
+            .receive(on: DispatchQueue.main)
+            .sink { [weak self] event in
             switch event {
             case .createdCategory, .updatedCategory, .fetchCategories, .deletedCategory:
                 self?.categoryTableView.reloadData()
-            case .failed(let errorMessage):
+            case .failure(let errorMessage):
                 self?.showErrorAlert(with: errorMessage)
             }
         }.store(in: &cancellables)
@@ -112,8 +114,6 @@ final class BookCategoryViewController: UIViewController {
             normal: normalAttributes,
             selected: selectedAttributes
         ) { [weak self] in
-            guard let self else { return }
-            
             let alert = UIAlertController(
                 title: "카테고리 추가",
                 message: "새로운 카테고리를 입력해주세요.",
@@ -121,15 +121,11 @@ final class BookCategoryViewController: UIViewController {
                     textField.placeholder = "카테고리 이름"
                 },
                 confirmHandler: { [weak self] newText in
-                    guard let newText, !newText.isEmpty else {
-                        MHLogger.error("입력한 카테고리 이름이 유효하지 않습니다.")
-                        return
-                    }
-                    self?.input.send(.addCategory(text: newText))
+                    self?.input.send(.createCategory(text: newText ?? ""))
                 }
             )
             
-            self.present(alert, animated: true)
+            self?.present(alert, animated: true)
         }
     }
     
@@ -171,26 +167,20 @@ extension BookCategoryViewController: UITableViewDelegate {
             style: .normal,
             title: "수정"
         ) { [weak self] _, _, completion in
-            guard let self else { return }
             let alert = UIAlertController(
                 title: "카테고리 수정",
                 message: "수정할 카테고리 이름을 입력해주세요.",
                 textFieldConfiguration: { textField in
                     textField.placeholder = "카테고리 이름"
-                    textField.text = self.viewModel.categories[indexPath.row].name
+                    textField.text = self?.viewModel.categories[indexPath.row].name
                 },
                 confirmHandler: { [weak self] newText in
-                    guard let self, let newText = newText, !newText.isEmpty else {
-                        MHLogger.error("수정할 카테고리 이름이 유효하지 않습니다.")
-                        completion(false)
-                        return
-                    }
-                    self.input.send(.updateCategory(index: indexPath.row, text: newText))
+                    self?.input.send(.updateCategory(index: indexPath.row, text: newText ?? ""))
                     completion(true)
                 }
             )
             
-            self.present(alert, animated: true)
+            self?.present(alert, animated: true)
         }
         
         let deleteAction = UIContextualAction(
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Category/BookCategoryViewModel.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Category/ViewModel/BookCategoryViewModel.swift
similarity index 52%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Category/BookCategoryViewModel.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Category/ViewModel/BookCategoryViewModel.swift
index bb04987d..7738c162 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/Category/BookCategoryViewModel.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/Category/ViewModel/BookCategoryViewModel.swift
@@ -4,8 +4,8 @@ import MHCore
 
 final class BookCategoryViewModel: ViewModelType {
     enum Input {
-        case viewDidLoad
-        case addCategory(text: String)
+        case createCategory(text: String)
+        case fetchCategories
         case updateCategory(index: Int, text: String)
         case deleteCategory(index: Int)
     }
@@ -15,7 +15,7 @@ final class BookCategoryViewModel: ViewModelType {
         case fetchCategories
         case updatedCategory
         case deletedCategory
-        case failed(String)
+        case failure(String)
     }
     
     private let createBookCategoryUseCase: CreateBookCategoryUseCase
@@ -52,12 +52,12 @@ final class BookCategoryViewModel: ViewModelType {
         input.sink { [weak self] event in
             Task {
                 switch event {
-                case .viewDidLoad:
+                case .createCategory(let name):
+                    await self?.createCategory(name: name)
+                case .fetchCategories:
                     await self?.fetchCategories()
-                case .addCategory(let text):
-                    await self?.createCategory(text: text)
                 case .updateCategory(let index, let text):
-                    await self?.updateCategory(index: index, text: text)
+                    await self?.updateCategory(index: index, name: text)
                 case .deleteCategory(let index):
                     await self?.deleteCategory(index: index)
                 }
@@ -67,57 +67,59 @@ final class BookCategoryViewModel: ViewModelType {
         return output.eraseToAnyPublisher()
     }
     
-    // FIXME: MainActor 제거
-    @MainActor
-    private func createCategory(text: String) async {
+    private func createCategory(name: String) async {
+        guard validateCategoryName(with: name) else {
+            MHLogger.error("카테고리 생성 유효성 검증 실패: \(name)" + #function)
+            output.send(.failure("카테고리 생성 유효성 검증 실패"))
+            return
+        }
+        
         do {
-            let category = BookCategory(order: categories.count, name: text)
+            let category = BookCategory(order: categories.count, name: name)
             try await createBookCategoryUseCase.execute(with: category)
             categories.append(category)
             output.send(.createdCategory)
         } catch {
-            MHLogger.error("카테고리를 생성하는데 실패했습니다: \(error)")
-            output.send(.failed("카테고리를 생성하는데 실패했습니다"))
+            MHLogger.error("카테고리를 생성하는데 실패했습니다: \(error)" + #function)
+            output.send(.failure("카테고리를 생성하는데 실패했습니다"))
         }
     }
     
-    @MainActor
     private func fetchCategories() async {
         do {
             let fetchedCategories = try await fetchBookCategoriesUseCase.execute()
             categories.append(contentsOf: fetchedCategories)
             output.send(.fetchCategories)
         } catch {
-            MHLogger.error("카테고리를 불러오는데 실패했습니다: \(error)")
-            output.send(.failed("카테고리를 불러오는데 실패했습니다"))
+            MHLogger.error("카테고리를 불러오는데 실패했습니다: \(error)" + #function)
+            output.send(.failure("카테고리를 불러오는데 실패했습니다"))
         }
     }
     
-    @MainActor
-    private func updateCategory(index: Int, text: String) async {
-        guard index >= 0 && index < categories.count else {
-            MHLogger.error("유효하지 않은 인덱스: \(index)")
-            output.send(.failed("유효하지 않은 인덱스: \(index)"))
+    private func updateCategory(index: Int, name: String) async {
+        guard validateIndex(index),
+              validateCategoryName(with: name) else {
+            MHLogger.error("카테고리 업데이트 유효성 검증 실패: \(name)" + #function)
+            output.send(.failure("카테고리 업데이트 유효성 검증 실패"))
             return
         }
         
         do {
             let oldName = categories[index].name
-            let category = BookCategory(order: index, name: text)
+            let category = BookCategory(order: index, name: name)
             try await updateBookCategoryUseCase.execute(oldName: oldName, with: category)
             categories[index] = category
             output.send(.updatedCategory)
         } catch {
-            MHLogger.error("카테고리를 업데이트하는데 실패했습니다: \(error)")
-            output.send(.failed("카테고리를 업데이트하는데 실패했습니다"))
+            MHLogger.error("카테고리를 업데이트하는데 실패했습니다: \(error)" + #function)
+            output.send(.failure("카테고리를 업데이트하는데 실패했습니다"))
         }
     }
     
-    @MainActor
     private func deleteCategory(index: Int) async {
-        guard index >= 0 && index < categories.count else {
-            MHLogger.error("유효하지 않은 인덱스: \(index)")
-            output.send(.failed("유효하지 않은 인덱스: \(index)"))
+        guard validateIndex(index) else {
+            MHLogger.error("카테고리 삭제 유효성 검증 실패: \(index)" + #function)
+            output.send(.failure("카테고리를 삭제하는데 실패했습니다"))
             return
         }
         
@@ -127,8 +129,55 @@ final class BookCategoryViewModel: ViewModelType {
             categories.remove(at: index)
             output.send(.deletedCategory)
         } catch {
-            MHLogger.error("카테고리를 삭제하는데 실패했습니다: \(error)")
-            output.send(.failed("카테고리를 삭제하는데 실패했습니다"))
+            MHLogger.error("카테고리를 삭제하는데 실패했습니다: \(error)" + #function)
+            output.send(.failure("카테고리를 삭제하는데 실패했습니다"))
+        }
+    }
+    
+    // MARK: - 카테고리 유효성 검사
+    private func validateCategoryName(with name: String) -> Bool {
+        return validateNonEmptyName(name)
+            && validateUniqueName(name)
+            && validateNameLength(name)
+    }
+    
+    // 인덱스 유효성 검사
+    private func validateIndex(_ index: Int) -> Bool {
+        guard index >= 0 && index < categories.count else {
+            MHLogger.error("유효하지 않은 인덱스: \(index)" + #function)
+            output.send(.failure("유효하지 않은 인덱스: \(index)"))
+            return false
+        }
+        return true
+    }
+
+    // 공백 또는 빈 문자열 검사
+    private func validateNonEmptyName(_ name: String) -> Bool {
+        guard !name.trimmingCharacters(in: .whitespacesAndNewlines).isEmpty else {
+            MHLogger.error("카테고리 이름이 비어있거나 공백만 포함되어 있음: \(name)" + #function)
+            output.send(.failure("카테고리 이름은 공백일 수 없습니다."))
+            return false
+        }
+        return true
+    }
+
+    // 중복 이름 검사
+    private func validateUniqueName(_ name: String) -> Bool {
+        guard !categories.contains(where: { $0.name == name }) else {
+            MHLogger.error("중복된 카테고리 이름: \(name)" + #function)
+            output.send(.failure("이미 존재하는 카테고리: \(name)"))
+            return false
+        }
+        return true
+    }
+
+    // 이름 길이 검사
+    private func validateNameLength(_ name: String) -> Bool {
+        guard name.count <= 10 else {
+            MHLogger.error("카테고리 이름이 너무 깁니다: \(name)" + #function)
+            output.send(.failure("카테고리 이름은 10자 이하여야 합니다."))
+            return false
         }
+        return true
     }
 }
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Category/BookCategoryViewModelFactory.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Category/ViewModel/BookCategoryViewModelFactory.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Category/BookCategoryViewModelFactory.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Category/ViewModel/BookCategoryViewModelFactory.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/CustomAlbum/View/CustomAlbumViewController.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/CustomAlbum/View/CustomAlbumViewController.swift
index 87385c30..389c5012 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/CustomAlbum/View/CustomAlbumViewController.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/CustomAlbum/View/CustomAlbumViewController.swift
@@ -176,20 +176,20 @@ final class CustomAlbumViewController: UIViewController {
                 Task { @MainActor in
                     guard let self = self else { return }
                     if status == .authorized || status == .limited {
-                        self.input.send(.viewDidLoad(mediaType: self.mediaType))
+                        self.input.send(.fetchPhotoAssets(mediaType: self.mediaType))
                     } else {
                         self.dismiss(animated: true)
                     }
                 }
             }
         case .authorized, .limited:
-            input.send(.viewDidLoad(mediaType: mediaType))
+            input.send(.fetchPhotoAssets(mediaType: mediaType))
         case .restricted, .denied:
             showRedirectSettingAlert(with: .image)
-            MHLogger.info("앨범 접근 권한 거부로 뷰를 닫았습니다.")
+            MHLogger.info("앨범 접근 권한 거부로 뷰를 닫았습니다." + #function)
         default:
             showRedirectSettingAlert(with: .image)
-            MHLogger.error("알 수 없는 권한 상태로 인해 뷰를 닫았습니다.")
+            MHLogger.error("알 수 없는 권한 상태로 인해 뷰를 닫았습니다." + #function)
         }
     }
     
@@ -210,10 +210,10 @@ final class CustomAlbumViewController: UIViewController {
             albumCollectionView.reloadData()
         case .restricted, .denied:
             showRedirectSettingAlert(with: .camera)
-            MHLogger.info("카메라 권한 거부")
+            MHLogger.info("카메라 권한 거부" + #function)
         default:
             showRedirectSettingAlert(with: .camera)
-            MHLogger.error(authorization)
+            MHLogger.error("\(authorization) 권한 상태" + #function)
         }
     }
     
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/CustomAlbum/ViewModel/CustomAlbumViewModel.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/CustomAlbum/ViewModel/CustomAlbumViewModel.swift
index d39e7f17..54558a46 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/CustomAlbum/ViewModel/CustomAlbumViewModel.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/CustomAlbum/ViewModel/CustomAlbumViewModel.swift
@@ -4,7 +4,7 @@ import Combine
 
 final class CustomAlbumViewModel: ViewModelType {
     enum Input {
-        case viewDidLoad(mediaType: PHAssetMediaType)
+        case fetchPhotoAssets(mediaType: PHAssetMediaType)
         case photoDidChanged(to: PHChange)
     }
     
@@ -20,7 +20,7 @@ final class CustomAlbumViewModel: ViewModelType {
     func transform(input: AnyPublisher<Input, Never>) -> AnyPublisher<Output, Never> {
         input.sink { [weak self] event in
             switch event {
-            case .viewDidLoad(let mediaType):
+            case .fetchPhotoAssets(let mediaType):
                 self?.fetchPhotoAssets(of: mediaType)
             case .photoDidChanged(let changeInstance):
                 self?.updatePhotoAssets(changeInstance)
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/View/EditBookViewController.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/View/EditBookViewController.swift
index e73f9a37..2ede6a59 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/View/EditBookViewController.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/View/EditBookViewController.swift
@@ -109,10 +109,10 @@ final class EditBookViewController: UIViewController {
         configureNavigationBar()
         configureAddSubView()
         configureConstraints()
-        configureKeyboard()
+        configureKeyboardNotification()
         configureBinding()
         configureButtonAction()
-        input.send(.viewDidLoad)
+        input.send(.fetchBook)
     }
     
     // MARK: - Setup & Configuration
@@ -206,7 +206,7 @@ final class EditBookViewController: UIViewController {
             trailing: editPageTableView.trailingAnchor, constantTrailing: 15
         )
     }
-    private func configureKeyboard() {
+    private func configureKeyboardNotification() {
         NotificationCenter.default.addObserver(
             self,
             selector: #selector(keyboardWillAppear),
@@ -215,7 +215,7 @@ final class EditBookViewController: UIViewController {
         )
         NotificationCenter.default.addObserver(
             self,
-            selector: #selector(keyboardWillHide),
+            selector: #selector(keyboardWillDisappear),
             name: UIResponder.keyboardWillHideNotification,
             object: nil
         )
@@ -310,7 +310,8 @@ final class EditBookViewController: UIViewController {
     }
     
     // MARK: - Keyboard Appear & Hide
-    @objc private func keyboardWillAppear(_ notification: Notification) {
+    @objc
+    private func keyboardWillAppear(_ notification: Notification) {
         guard let keyboardInfo = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey],
               let keyboardSize = keyboardInfo as? CGRect else { return }
         let bottomConstant = -(keyboardSize.height - view.safeAreaInsets.bottom + 10)
@@ -319,7 +320,8 @@ final class EditBookViewController: UIViewController {
             self?.view.layoutIfNeeded()
         }
     }
-    @objc private func keyboardWillHide() {
+    @objc
+    private func keyboardWillDisappear() {
         buttonStackViewBottomConstraint?.constant = Self.buttonBottomConstant
         UIView.animate(withDuration: 0.3) { [weak self] in
             self?.view.layoutIfNeeded()
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/View/EditPageCell.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/View/EditPageCell.swift
index 1588f70f..029388a8 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/View/EditPageCell.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/View/EditPageCell.swift
@@ -99,7 +99,7 @@ final class EditPageCell: UITableViewCell {
                 case let .mediaLoadedWithURL(media, url):
                     self?.mediaLoadedWithURL(media: media, url: url)
                 case let .error(message):
-                    MHLogger.error(message) // TODO: 더 좋은 처리가 필요함
+                    MHLogger.error(message + #function) // TODO: 더 좋은 처리가 필요함
                 }
             }.store(in: &cancellables)
     }
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/ViewModel/EditBookViewModel.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/ViewModel/EditBookViewModel.swift
index 9e483515..65947a57 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/ViewModel/EditBookViewModel.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/EditBook/ViewModel/EditBookViewModel.swift
@@ -6,7 +6,7 @@ import MHCore
 final class EditBookViewModel: ViewModelType {
     // MARK: - Type
     enum Input {
-        case viewDidLoad
+        case fetchBook
         case didAddMediaInTemporary(media: MediaDescription)
         case didAddMediaWithData(type: MediaType, attributes: [String: any Sendable]?, data: Data)
         case didAddMediaInURL(type: MediaType, attributes: [String: any Sendable]?, url: URL)
@@ -61,7 +61,7 @@ final class EditBookViewModel: ViewModelType {
     func transform(input: AnyPublisher<Input, Never>) -> AnyPublisher<Output, Never> {
         input.sink { [weak self] event in
             switch event {
-            case .viewDidLoad:
+            case .fetchBook:
                 Task { await self?.fetchBook() }
             case let .didAddMediaInTemporary(media):
                 Task { await self?.addMedia(media) }
@@ -117,13 +117,16 @@ final class EditBookViewModel: ViewModelType {
         let description = MediaDescription(type: type, attributes: attributes)
         do {
             try await createMediaUseCase.execute(media: description, from: url, at: bookID)
-            try await deleteTemporaryMediaUsecase.execute(media: description)
+            if type == .audio {
+                try await deleteTemporaryMediaUsecase.execute(media: description)
+            }
             editPageViewModels[currentPageIndex].addMedia(media: description, url: url)
         } catch {
             output.send(.error(message: "미디어를 추가하는데 실패했습니다."))
             MHLogger.error(error.localizedDescription + #function)
         }
     }
+    
     private func addMedia(_ description: MediaDescription) async {
         do {
             try await storeMediaUseCase.excute(media: description, to: bookID)
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/EditPhoto/EditPhotoViewController.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/EditPhoto/EditPhotoViewController.swift
index a188f197..45756727 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/EditPhoto/EditPhotoViewController.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/EditPhoto/EditPhotoViewController.swift
@@ -122,7 +122,7 @@ final class EditPhotoViewController: UIViewController {
         )
         NotificationCenter.default.addObserver(
             self,
-            selector: #selector(keyboardWillHide),
+            selector: #selector(keyboardWillDisappear),
             name: UIResponder.keyboardWillHideNotification,
             object: nil
         )
@@ -284,7 +284,8 @@ final class EditPhotoViewController: UIViewController {
     }
     
     // MARK: - Keyboard Appear & Hide
-    @objc private func keyboardWillAppear(_ notification: Notification) {
+    @objc
+    private func keyboardWillAppear(_ notification: Notification) {
         guard let keyboardInfo = notification.userInfo?[UIResponder.keyboardFrameEndUserInfoKey],
               let keyboardSize = keyboardInfo as? CGRect else { return }
         let bottomConstant = editButtonStackView.frame.height + view.safeAreaInsets.bottom
@@ -294,7 +295,8 @@ final class EditPhotoViewController: UIViewController {
         }
     }
     
-    @objc private func keyboardWillHide() {
+    @objc
+    private func keyboardWillDisappear() {
         captionTextFieldBottomConstraint?.constant = -11
         UIView.animate(withDuration: 0.3) { [weak self] in
             self?.view.layoutIfNeeded()
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/Notification+Keyboard.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/Notification+Keyboard.swift
new file mode 100644
index 00000000..e5609563
--- /dev/null
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/Notification+Keyboard.swift
@@ -0,0 +1,13 @@
+import UIKit
+
+extension UIViewController {
+    @objc
+    func keyboardWillShow(_ sender: Notification) {
+        self.view.frame.origin.y = -120
+    }
+    
+    @objc
+    func keyboardWillHide(_ sender: Notification) {
+        self.view.frame.origin.y = 0
+    }
+}
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIImage+Resize.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIImage/UIImage+Resize.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIImage+Resize.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIImage/UIImage+Resize.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIImage+Rotate.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIImage/UIImage+Rotate.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIImage+Rotate.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIImage/UIImage+Rotate.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView+Anchor.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView/UIView+Anchor.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView+Anchor.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView/UIView+Anchor.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView+Background.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView/UIView+Background.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView+Background.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView/UIView+Background.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView+CustomView.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView/UIView+CustomView.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView+CustomView.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView/UIView+CustomView.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView+SnapshotImage.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView/UIView+SnapshotImage.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView+SnapshotImage.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIView/UIView+SnapshotImage.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController+AudioSession.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController/UIViewController+AudioSession.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController+AudioSession.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController/UIViewController+AudioSession.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController+AuthorizationAlert.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController/UIViewController+AuthorizationAlert.swift
similarity index 88%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController+AuthorizationAlert.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController/UIViewController+AuthorizationAlert.swift
index 7e366c66..d58d21a2 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController+AuthorizationAlert.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController/UIViewController+AuthorizationAlert.swift
@@ -30,8 +30,11 @@ extension UIViewController {
                 }
             },
             cancelHandler: { [weak self] in
-                if content == .image {
+                switch content {
+                case .image, .camera:
                     self?.navigationController?.popViewController(animated: true)
+                case .audio:
+                    self?.dismiss(animated: true)
                 }
             }
         )
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController+ErrorAlert.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController/UIViewController+ErrorAlert.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController+ErrorAlert.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController/UIViewController+ErrorAlert.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController+HideKeyboard.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController/UIViewController+HideKeyboard.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController+HideKeyboard.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Extensions/UIViewController/UIViewController+HideKeyboard.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Home/BookCollectionViewCell.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Home/View/BookCollectionViewCell.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Home/BookCollectionViewCell.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Home/View/BookCollectionViewCell.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Home/HomeViewController.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Home/View/HomeViewController.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Home/HomeViewController.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Home/View/HomeViewController.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Home/HomeViewModel.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Home/ViewModel/HomeViewModel.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Home/HomeViewModel.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Home/ViewModel/HomeViewModel.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Home/HomeViewModelFactory.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Home/ViewModel/HomeViewModelFactory.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Home/HomeViewModelFactory.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Home/ViewModel/HomeViewModelFactory.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/ReadPage/View/ReadPageViewController.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/ReadPage/View/ReadPageViewController.swift
index 395771bf..032578aa 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/ReadPage/View/ReadPageViewController.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/ReadPage/View/ReadPageViewController.swift
@@ -51,7 +51,7 @@ final class ReadPageViewController: UIViewController {
         bind()
         setup()
         configureConstraints()
-        input.send(.viewDidLoad)
+        input.send(.loadPage)
     }
     
     private func bind() {
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/ReadPage/ViewModel/ReadPageViewModel.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/ReadPage/ViewModel/ReadPageViewModel.swift
index 277a337c..04cd57e6 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/ReadPage/ViewModel/ReadPageViewModel.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/ReadPage/ViewModel/ReadPageViewModel.swift
@@ -5,7 +5,7 @@ import Combine
 
 public final class ReadPageViewModel: ViewModelType {
     enum Input {
-        case viewDidLoad
+        case loadPage
         case didRequestMediaDataForData(media: MediaDescription)
         case didRequestMediaDataForURL(media: MediaDescription)
     }
@@ -37,7 +37,7 @@ public final class ReadPageViewModel: ViewModelType {
     func transform(input: AnyPublisher<Input, Never>) -> AnyPublisher<Output, Never> {
         input.sink { [weak self] event in
             switch event {
-            case .viewDidLoad:
+            case .loadPage:
                 self?.output.send(.loadPage(page: self?.page))
             case .didRequestMediaDataForData(let media):
                 Task { await self?.loadMediaForData(media: media) }
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Register/RegisterViewController.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Register/View/RegisterViewController.swift
similarity index 87%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Register/RegisterViewController.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Register/View/RegisterViewController.swift
index dfb2dd41..41b7d230 100644
--- a/MemorialHouse/MHPresentation/MHPresentation/Source/Register/RegisterViewController.swift
+++ b/MemorialHouse/MHPresentation/MHPresentation/Source/Register/View/RegisterViewController.swift
@@ -75,6 +75,7 @@ public final class RegisterViewController: UIViewController {
         
         setup()
         bind()
+        configureKeyboardNotification()
         configureAddSubview()
         configureConstraints()
     }
@@ -121,6 +122,21 @@ public final class RegisterViewController: UIViewController {
         }
     }
     
+    private func configureKeyboardNotification() {
+        NotificationCenter.default.addObserver(
+            self,
+            selector: #selector(keyboardWillShow(_:)),
+            name: UIResponder.keyboardWillShowNotification,
+            object: nil
+        )
+        NotificationCenter.default.addObserver(
+            self,
+            selector: #selector(keyboardWillHide(_:)),
+            name: UIResponder.keyboardWillHideNotification,
+            object: nil
+        )
+    }
+    
     private func configureAddSubview() {
         view.addSubview(coverImageView)
         view.addSubview(registerTextLabel)
@@ -179,8 +195,21 @@ public final class RegisterViewController: UIViewController {
 }
 
 extension RegisterViewController: UITextFieldDelegate {
-    public func textFieldShouldReturn(_ textField: UITextField) -> Bool {
+    public func textFieldShouldReturn(
+        _ textField: UITextField
+    ) -> Bool {
         textField.resignFirstResponder()
         return true
     }
+    
+    public func textField(
+        _ textField: UITextField,
+        shouldChangeCharactersIn range: NSRange,
+        replacementString string: String
+    ) -> Bool {
+        guard let currentText = textField.text as NSString? else { return false }
+        let newLength = currentText.length + string.count - range.length
+        
+        return newLength <= 10
+    }
 }
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Register/RegisterViewModel.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Register/ViewModel/RegisterViewModel.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Register/RegisterViewModel.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Register/ViewModel/RegisterViewModel.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Register/RegisterViewModelFactory.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Register/ViewModel/RegisterViewModelFactory.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Register/RegisterViewModelFactory.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Register/ViewModel/RegisterViewModelFactory.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Setting/SettingViewController.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Setting/View/SettingViewController.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Setting/SettingViewController.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Setting/View/SettingViewController.swift
diff --git a/MemorialHouse/MHPresentation/MHPresentation/Source/Setting/SettingViewModel.swift b/MemorialHouse/MHPresentation/MHPresentation/Source/Setting/ViewModel/SettingViewModel.swift
similarity index 100%
rename from MemorialHouse/MHPresentation/MHPresentation/Source/Setting/SettingViewModel.swift
rename to MemorialHouse/MHPresentation/MHPresentation/Source/Setting/ViewModel/SettingViewModel.swift