diff --git a/.rubocop_todo.yml b/.rubocop_todo.yml
deleted file mode 100644
index 3bae12090f3..00000000000
--- a/.rubocop_todo.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-# This configuration was generated by
-# `rubocop --auto-gen-config --auto-gen-only-exclude --exclude-limit 1000`
-# on 2023-07-02 06:34:03 UTC using RuboCop version 1.37.1.
-# The point is for the user to remove these configuration records
-# one by one as the offenses are removed from the code base.
-# Note that changes in the inspected code, or installation of new
-# versions of RuboCop, may require this file to be generated again.
-
-# Offense count: 386
-# This cop supports safe autocorrection (--autocorrect).
-# Configuration parameters: EnforcedStyle, EnforcedShorthandSyntax, UseHashRocketsWithSymbolValues, PreferHashRocketsForNonAlnumEndingSymbols.
-# SupportedStyles: ruby19, hash_rockets, no_mixed_keys, ruby19_no_mixed_keys
-# SupportedShorthandSyntax: always, never, either, consistent
-Style/HashSyntax:
-  Exclude:
-    - 'test/deliveries/activity_delivery_test.rb'
-    - 'test/mailers/activity_mailer_test.rb'
-    - 'test/mailers/notification_mailer_test.rb'
-    - 'test/mailers/previews/activity_mailer_preview.rb'
-    - 'test/mailers/previews/notification_mailer_preview.rb'
-    - 'test/models/answer_test.rb'
-    - 'test/models/bookmark_test.rb'
-    - 'test/models/category_test.rb'
-    - 'test/models/discord/times_channel_test.rb'
-    - 'test/models/event_test.rb'
diff --git a/app/mailers/user_mailer.rb b/app/mailers/user_mailer.rb
index 2c5c7505844..b211e4a049c 100644
--- a/app/mailers/user_mailer.rb
+++ b/app/mailers/user_mailer.rb
@@ -9,7 +9,7 @@ def reset_password_email(user)
 
   def welcome(user)
     @user = user
-    mail to: user.email, bcc: 'info@lokka.jp', subject: '[FBC] フィヨルドブートキャンプへようこそ'
+    mail to: user.email, subject: '[FBC] フィヨルドブートキャンプへようこそ'
   end
 
   def retire(user)
diff --git a/app/views/admin/campaigns/index.html.slim b/app/views/admin/campaigns/index.html.slim
index 179e51018b2..9a637e6ac80 100644
--- a/app/views/admin/campaigns/index.html.slim
+++ b/app/views/admin/campaigns/index.html.slim
@@ -3,7 +3,7 @@
 header.page-header
   .container
     .page-header__inner
-      h1.page-header__title
+      h2.page-header__title
         | 管理ページ
       .page-header-actions
         .page-header-actions__items