diff --git a/14th-team5-iOS/App/Sources/Presentation/Calendar/Reactor/CalendarPostCellReactor.swift b/14th-team5-iOS/App/Sources/Presentation/Calendar/Reactor/CalendarPostCellReactor.swift
index 22e1be498..04c815277 100644
--- a/14th-team5-iOS/App/Sources/Presentation/Calendar/Reactor/CalendarPostCellReactor.swift
+++ b/14th-team5-iOS/App/Sources/Presentation/Calendar/Reactor/CalendarPostCellReactor.swift
@@ -39,6 +39,8 @@ public final class CalendarPostCellReactor: Reactor {
     // MARK: - Properties
     public var initialState: State
     
+    @Injected var fetchUserNameUseCase: FetchUserNameUseCaseProtocol
+    
     @Injected var meUseCase: MemberUseCaseProtocol
     @Injected var provider: ServiceProviderProtocol
     
@@ -72,9 +74,9 @@ public final class CalendarPostCellReactor: Reactor {
             
         case .requestAuthorName:
             let authorId = initialState.post.authorId
-            let authorName = meUseCase.executeFetchUserName(memberId: authorId)
+            let authorName = fetchUserNameUseCase.execute(memberId: authorId) ?? "알 수 없음"
             return Observable<Mutation>.just(.setAuthorName(authorName))
-            
+       
         case .requestAuthorImageUrl:
             let authorId = initialState.post.authorId
             let authorImageUrl = meUseCase.executeProfileImageUrlString(memberId: authorId)
diff --git a/14th-team5-iOS/App/Sources/Presentation/Calendar/Reactor/MonthlyCalendarViewReactor.swift b/14th-team5-iOS/App/Sources/Presentation/Calendar/Reactor/MonthlyCalendarViewReactor.swift
index e27bfd078..43c893eb6 100644
--- a/14th-team5-iOS/App/Sources/Presentation/Calendar/Reactor/MonthlyCalendarViewReactor.swift
+++ b/14th-team5-iOS/App/Sources/Presentation/Calendar/Reactor/MonthlyCalendarViewReactor.swift
@@ -26,6 +26,8 @@ public final class MonthlyCalendarViewReactor: Reactor {
         case pushDailyCalendarViewController(Date)
         case setInfoPopover(UIView)
         case setCalendarItems([String])
+        // TODO: - 싹다 코드 리팩토링하기
+        case setCalendarPageIndexPath(IndexPath)
     }
     
     // MARK: - State
@@ -34,6 +36,8 @@ public final class MonthlyCalendarViewReactor: Reactor {
         @Pulse var shouldPushDailyCalendarViewController: Date?
         @Pulse var shouldPresnetInfoPopover: UIView?
         @Pulse var displayCalendar: [MonthlyCalendarSectionModel]
+        
+        var initalCalendarPageIndexPath: IndexPath? = nil
     }
     
     
@@ -80,7 +84,12 @@ public final class MonthlyCalendarViewReactor: Reactor {
             return Observable<Mutation>.just(.popViewController)
             
         case let .addCalendarItems(items):
-            return Observable<Mutation>.just(.setCalendarItems(items))
+            let indexPath = IndexPath(item: items.count-1, section: 0)
+            
+            return Observable<Mutation>.concat(
+                Observable<Mutation>.just(.setCalendarItems(items)),
+                Observable<Mutation>.just(.setCalendarPageIndexPath(indexPath))
+            )
             
         }
     }
@@ -104,7 +113,12 @@ public final class MonthlyCalendarViewReactor: Reactor {
                 items: items
             )
             newState.displayCalendar = [newDatasource]
+            
+        case let .setCalendarPageIndexPath(indexPath):
+            newState.initalCalendarPageIndexPath = indexPath
         }
+    
+        
         return newState
     }
 }
diff --git a/14th-team5-iOS/App/Sources/Presentation/Calendar/View/Cell/CalendarPostCell.swift b/14th-team5-iOS/App/Sources/Presentation/Calendar/View/Cell/CalendarPostCell.swift
index f6b22c684..d32c4d8b8 100644
--- a/14th-team5-iOS/App/Sources/Presentation/Calendar/View/Cell/CalendarPostCell.swift
+++ b/14th-team5-iOS/App/Sources/Presentation/Calendar/View/Cell/CalendarPostCell.swift
@@ -110,7 +110,7 @@ final class CalendarPostCell: BaseCollectionViewCell<CalendarPostCellReactor> {
 
         reactor.state.compactMap { $0.authorName }
             .distinctUntilChanged()
-            .bind(with: self) { $0.authorNameLabel.text = $1[0] }
+            .bind(to: authorFirstNameLabel.rx.firstLetterText)
             .disposed(by: disposeBag)
         
         reactor.state.compactMap { $0.authorImageUrl }
diff --git a/14th-team5-iOS/App/Sources/Presentation/Calendar/ViewController/MonthlyCalendarViewController.swift b/14th-team5-iOS/App/Sources/Presentation/Calendar/ViewController/MonthlyCalendarViewController.swift
index d96c76bd1..bf426b69c 100644
--- a/14th-team5-iOS/App/Sources/Presentation/Calendar/ViewController/MonthlyCalendarViewController.swift
+++ b/14th-team5-iOS/App/Sources/Presentation/Calendar/ViewController/MonthlyCalendarViewController.swift
@@ -16,12 +16,8 @@ import RxDataSources
 import SnapKit
 import Then
 
-import MacrosInterface
-
-@Codable
-struct MemberDTO {
-    var name: String
-}
+// 지금 당장 BBNavigationViewController로 바꿔도 안됨
+// 왜냐하면, PopoverViewController Delegate 문제가 발생하기 때문!
 
 fileprivate typealias _Str = CalendarStrings
 public final class MonthlyCalendarViewController: TempNavigationViewController<MonthlyCalendarViewReactor> {
@@ -52,7 +48,7 @@ public final class MonthlyCalendarViewController: TempNavigationViewController<M
             .bind(with: self) { owner, _ in
                 UIView.transition(
                     with: owner.calendarCollectionView,
-                    duration: 0.15,
+                    duration: 0.25,
                     options: .transitionCrossDissolve
                 ) { [weak self] in
                     self?.calendarCollectionView.isHidden = false
@@ -60,13 +56,15 @@ public final class MonthlyCalendarViewController: TempNavigationViewController<M
             }
             .disposed(by: disposeBag)
         
-        App.Repository.member.familyCreatedAt
+        App.Repository.member.familyCreatedAt // 캘린더 페이지를 생성하는 코드 ex) 2024년 3월 ~ 9월
             .withUnretained(self)
             .map {
                 guard let createdAt = $0.1 else {
                     let _20230101 = Date._20230101
                     return $0.0.createCalendarItems(from: _20230101)
                 }
+                print("======= \(createdAt)")
+                print("======= \($0.0.createCalendarItems(from: createdAt))")
                 return $0.0.createCalendarItems(from: createdAt)
             }
             .map { Reactor.Action.addCalendarItems($0)}
@@ -85,6 +83,12 @@ public final class MonthlyCalendarViewController: TempNavigationViewController<M
             .bind(to: calendarCollectionView.rx.items(dataSource: dataSource))
             .disposed(by: disposeBag)
         
+        reactor.state.compactMap { $0.initalCalendarPageIndexPath }
+            .bind(with: self) { owner, indexPath in
+                owner.scrollToLastIndexPath(indexPath)
+            }
+            .disposed(by: disposeBag)
+        
         reactor.pulse(\.$shouldPushDailyCalendarViewController).compactMap { $0 }
             .withUnretained(self)
             .subscribe { $0.0.pushWeeklyCalendarViewController($0.1) }
@@ -134,7 +138,6 @@ public final class MonthlyCalendarViewController: TempNavigationViewController<M
             $0.backgroundColor = UIColor.clear
             $0.register(CalendarCell.self, forCellWithReuseIdentifier: CalendarCell.id)
         }
-        scrollToLastIndexPath()
     }
 }
 
@@ -174,9 +177,7 @@ extension MonthlyCalendarViewController {
     private func prepareDatasource() -> RxCollectionViewSectionedReloadDataSource<MonthlyCalendarSectionModel> {
         return RxCollectionViewSectionedReloadDataSource<MonthlyCalendarSectionModel> { datasource, collectionView, indexPath, yearMonth in
             let cell = collectionView.dequeueReusableCell(withReuseIdentifier: CalendarCell.id, for: indexPath) as! CalendarCell
-            cell.reactor = CalendarCellDIContainer(
-                yearMonth: yearMonth
-            ).makeReactor()
+            cell.reactor = CalendarCellReactor(yearMonth: yearMonth)
             return cell
         }
     }
@@ -190,12 +191,11 @@ extension MonthlyCalendarViewController {
         )
     }
     
-    private func scrollToLastIndexPath() {
+    private func scrollToLastIndexPath(_ indexPath: IndexPath) {
         calendarCollectionView.layoutIfNeeded()
-        let indexPath: IndexPath = IndexPath(
-            item: dataSource[0].items.count - 1,
-            section: 0
-        )
+        
+        print("======= \(dataSource[0].items.count - 1)")
+        
         calendarCollectionView.scrollToItem(
             at: indexPath,
             at: .centeredHorizontally,
diff --git a/14th-team5-iOS/App/Sources/Presentation/Comment/View/Cell/CommentCell.swift b/14th-team5-iOS/App/Sources/Presentation/Comment/View/Cell/CommentCell.swift
index cea16f36c..ebd4d01e4 100644
--- a/14th-team5-iOS/App/Sources/Presentation/Comment/View/Cell/CommentCell.swift
+++ b/14th-team5-iOS/App/Sources/Presentation/Comment/View/Cell/CommentCell.swift
@@ -160,6 +160,7 @@ final public class CommentCell: BaseTableViewCell<CommentCellReactor> {
         }
         
         profileImage.do {
+            $0.layer.masksToBounds = true
             $0.layer.cornerRadius = 44 / 2
             $0.contentMode = .scaleAspectFill
         }