diff --git a/app/.rubocop.yml b/app/.rubocop.yml
index 1ac2362..f157647 100644
--- a/app/.rubocop.yml
+++ b/app/.rubocop.yml
@@ -21,6 +21,7 @@ Metrics/AbcSize:
 Metrics/BlockLength:
   Exclude:
     - 'spec/**/*_spec.rb'
+    - 'config/environments/development.rb'
 
 Metrics/MethodLength:
   Exclude:
diff --git a/app/Gemfile b/app/Gemfile
index 17798ef..7e231b0 100644
--- a/app/Gemfile
+++ b/app/Gemfile
@@ -22,6 +22,7 @@ gem 'turbo-rails'
 gem 'tzinfo-data'
 
 group :development, :test do
+  gem 'bullet'
   gem 'debug', platforms: %i[mri windows]
   gem 'factory_bot_rails'
   gem 'faker'
diff --git a/app/Gemfile.lock b/app/Gemfile.lock
index b0f206d..516a906 100644
--- a/app/Gemfile.lock
+++ b/app/Gemfile.lock
@@ -93,6 +93,9 @@ GEM
     bootsnap (1.18.4)
       msgpack (~> 1.2)
     builder (3.3.0)
+    bullet (7.2.0)
+      activesupport (>= 3.0.0)
+      uniform_notifier (~> 1.11)
     concurrent-ruby (1.3.4)
     connection_pool (2.4.1)
     crass (1.0.6)
@@ -353,6 +356,7 @@ GEM
     tzinfo-data (1.2024.1)
       tzinfo (>= 1.0.0)
     unicode-display_width (2.5.0)
+    uniform_notifier (1.16.0)
     uri (0.13.0)
     useragent (0.16.10)
     version_gem (1.1.4)
@@ -370,6 +374,7 @@ PLATFORMS
 DEPENDENCIES
   aws-sdk-s3
   bootsnap
+  bullet
   debug
   factory_bot_rails
   faker
diff --git a/app/app/controllers/admin/game_schedules_controller.rb b/app/app/controllers/admin/game_schedules_controller.rb
index 0bdd2bb..10e877e 100644
--- a/app/app/controllers/admin/game_schedules_controller.rb
+++ b/app/app/controllers/admin/game_schedules_controller.rb
@@ -7,6 +7,7 @@ class GameSchedulesController < ApplicationController
     def index
       @game_schedules = GameSchedule.start_at_ordered
                                     .search_by_keyword(index_params[:search])
+                                    .preload(:season, :tournament, :home_team, :visitor_team, :game_field)
                                     .page(index_params[:page])
                                     .per(INDEX_PER_PAGE)
     end
diff --git a/app/app/controllers/admin/media_page_settings_controller.rb b/app/app/controllers/admin/media_page_settings_controller.rb
index f1a43fa..e66dac9 100644
--- a/app/app/controllers/admin/media_page_settings_controller.rb
+++ b/app/app/controllers/admin/media_page_settings_controller.rb
@@ -3,7 +3,7 @@
 module Admin
   class MediaPageSettingsController < ApplicationController
     def show
-      @media_hero_images = MediaHeroImage.sort_order_ordered
+      @media_hero_images = MediaHeroImage.preload(image_attachment: :blob).sort_order_ordered
     end
   end
 end
diff --git a/app/app/controllers/media/game_schedules_controller.rb b/app/app/controllers/media/game_schedules_controller.rb
index b635457..9f6d451 100644
--- a/app/app/controllers/media/game_schedules_controller.rb
+++ b/app/app/controllers/media/game_schedules_controller.rb
@@ -12,7 +12,7 @@ def index
       game_schedules = GameSchedule.start_at_ordered
                                    .game_field_ordered
                                    .where(season: @season)
-                                   .preload(:home_team, :visitor_team, :game_field, :tournament)
+                                   .preload(:home_team, :visitor_team, :game_field, :tournament, :game_result)
 
       # group by date.
       @game_schedule_groups = game_schedules.group_by { |game_schedule| game_schedule.start_at.to_date }
diff --git a/app/app/controllers/media/homes_controller.rb b/app/app/controllers/media/homes_controller.rb
index 3202e7c..aa9a6d7 100644
--- a/app/app/controllers/media/homes_controller.rb
+++ b/app/app/controllers/media/homes_controller.rb
@@ -6,12 +6,14 @@ class HomesController < ApplicationController
 
     def show
       @media_hero_images = MediaHeroImage.sort_order_ordered
+                                         .preload(image_attachment: :blob)
 
       @notices = Notice.only_published
                        .published_at_ordered
                        .limit(NOTICES_LIMIT)
 
       @game_schedules = GameSchedule.next_scheduled_games
+                                    .preload(:game_field, :tournament, :home_team, :visitor_team, :game_result)
     end
   end
 end
diff --git a/app/app/views/admin/game_schedules/_form.html.haml b/app/app/views/admin/game_schedules/_form.html.haml
index 8f39401..3b03c8d 100644
--- a/app/app/views/admin/game_schedules/_form.html.haml
+++ b/app/app/views/admin/game_schedules/_form.html.haml
@@ -31,7 +31,7 @@
           = GameSchedule.human_attribute_name(:home_team)
         .admin-field__value
           = form.select_with_image(:home_team_id,
-                                   Team.all,
+                                   Team.preload({ logo_attachment: :blob }),
                                    value_method: :id,
                                    text_method: :name,
                                    image_method: :logo_url,
@@ -43,7 +43,7 @@
           = GameSchedule.human_attribute_name(:visitor_team)
         .admin-field__value
           = form.select_with_image(:visitor_team_id,
-                                   Team.all,
+                                   Team.preload({ logo_attachment: :blob }),
                                    value_method: :id,
                                    text_method: :name,
                                    image_method: :logo_url,
diff --git a/app/config/environments/development.rb b/app/config/environments/development.rb
index f45efa3..2ca5b50 100644
--- a/app/config/environments/development.rb
+++ b/app/config/environments/development.rb
@@ -69,4 +69,15 @@
 
   # Apply autocorrection by RuboCop to files generated by `bin/rails generate`.
   # config.generators.apply_rubocop_autocorrect_after_generate!
+
+  config.after_initialize do
+    Bullet.enable = true
+    Bullet.alert = true
+    Bullet.rails_logger = true
+    Bullet.add_footer = true
+    Bullet.skip_html_injection = false
+
+    Bullet.add_safelist type: :unused_eager_loading, class_name: 'ActiveStorage::Attachment',
+                        association: :blob
+  end
 end