diff --git a/backend/app/controllers/material_versions_controller.rb b/backend/app/controllers/material_versions_controller.rb
index 9ee5ff1..5f68b48 100644
--- a/backend/app/controllers/material_versions_controller.rb
+++ b/backend/app/controllers/material_versions_controller.rb
@@ -5,6 +5,7 @@ class MaterialVersionsController < ApplicationController
 
     page = 1 if page < 1
     limit = 1 if limit < 1
+    limit = 100 if limit > 100
 
     offset = (page - 1) * limit
 
diff --git a/backend/app/controllers/materials_controller.rb b/backend/app/controllers/materials_controller.rb
index 93b2fbe..46df777 100644
--- a/backend/app/controllers/materials_controller.rb
+++ b/backend/app/controllers/materials_controller.rb
@@ -14,6 +14,7 @@ class MaterialsController < ApplicationController
 
     page = 1 if page < 1
     limit = 1 if limit < 1
+    limit = 100 if limit > 100
 
     offset = (page - 1) * limit
 
diff --git a/backend/app/controllers/nico_tags_controller.rb b/backend/app/controllers/nico_tags_controller.rb
index 902358d..08a3877 100644
--- a/backend/app/controllers/nico_tags_controller.rb
+++ b/backend/app/controllers/nico_tags_controller.rb
@@ -15,6 +15,7 @@ class NicoTagsController < ApplicationController
 
     page = 1 if page < 1
     limit = 1 if limit < 1
+    limit = 100 if limit > 100
 
     post_tag_max_sql =
         PostExternalTag
diff --git a/backend/app/controllers/post_versions_controller.rb b/backend/app/controllers/post_versions_controller.rb
index cf07119..9a3b641 100644
--- a/backend/app/controllers/post_versions_controller.rb
+++ b/backend/app/controllers/post_versions_controller.rb
@@ -11,6 +11,7 @@ class PostVersionsController < ApplicationController
 
     page = 1 if page < 1
     limit = 1 if limit < 1
+    limit = 100 if limit > 100
 
     offset = (page - 1) * limit
 
diff --git a/backend/app/controllers/posts_controller.rb b/backend/app/controllers/posts_controller.rb
index ba15e99..34c71b0 100644
--- a/backend/app/controllers/posts_controller.rb
+++ b/backend/app/controllers/posts_controller.rb
@@ -34,6 +34,7 @@ class PostsController < ApplicationController
 
     page = 1 if page < 1
     limit = 1 if limit < 1
+    limit = 100 if limit > 100
 
     offset = (page - 1) * limit
 
diff --git a/backend/app/controllers/tag_versions_controller.rb b/backend/app/controllers/tag_versions_controller.rb
index 95c71d0..4668cd9 100644
--- a/backend/app/controllers/tag_versions_controller.rb
+++ b/backend/app/controllers/tag_versions_controller.rb
@@ -7,6 +7,7 @@ class TagVersionsController < ApplicationController
 
     page = 1 if page < 1
     limit = 1 if limit < 1
+    limit = 100 if limit > 100
 
     offset = (page - 1) * limit
 
diff --git a/backend/app/controllers/tags_controller.rb b/backend/app/controllers/tags_controller.rb
index 7c6feac..3162f14 100644
--- a/backend/app/controllers/tags_controller.rb
+++ b/backend/app/controllers/tags_controller.rb
@@ -33,6 +33,7 @@ class TagsController < ApplicationController
 
     page = 1 if page < 1
     limit = 1 if limit < 1
+    limit = 100 if limit > 100
 
     offset = (page - 1) * limit
 
diff --git a/backend/app/controllers/theatre_comments_controller.rb b/backend/app/controllers/theatre_comments_controller.rb
index 599a57e..4342983 100644
--- a/backend/app/controllers/theatre_comments_controller.rb
+++ b/backend/app/controllers/theatre_comments_controller.rb
@@ -2,6 +2,7 @@ class TheatreCommentsController < ApplicationController
   def index
     limit = params[:limit].to_i
     limit = 20 if limit <= 0
+    limit = 100 if limit > 100
 
     no_gt = params[:no_gt].to_i
     no_gt = 0 if no_gt < 0
@@ -9,6 +10,7 @@ class TheatreCommentsController < ApplicationController
     comments = TheatreComment
                .where(theatre_id: params[:theatre_id])
                .where('no > ?', no_gt)
+               .includes(:user)
                .order(no: :desc)
                .limit(limit)
 
diff --git a/backend/app/controllers/theatre_programmes_controller.rb b/backend/app/controllers/theatre_programmes_controller.rb
index b386f63..bf6c917 100644
--- a/backend/app/controllers/theatre_programmes_controller.rb
+++ b/backend/app/controllers/theatre_programmes_controller.rb
@@ -2,6 +2,7 @@ class TheatreProgrammesController < ApplicationController
   def index
     limit = params[:limit].to_i
     limit = 100 if limit <= 0
+    limit = 100 if limit > 100
 
     position_gt = params[:position_gt].to_i
     position_gt = 0 if position_gt < 0
@@ -10,7 +11,7 @@ class TheatreProgrammesController < ApplicationController
                  .where(theatre_id: params[:theatre_id])
                  .where('position > ?', position_gt)
                  .includes(:post)
-                 .order(position: :desc).limit(100)
+                 .order(position: :desc)
                  .limit(limit)
 
     render json: programmes.map { |programme|
diff --git a/backend/app/controllers/theatre_skip_events_controller.rb b/backend/app/controllers/theatre_skip_events_controller.rb
index c5047c5..4cb05de 100644
--- a/backend/app/controllers/theatre_skip_events_controller.rb
+++ b/backend/app/controllers/theatre_skip_events_controller.rb
@@ -2,6 +2,7 @@ class TheatreSkipEventsController < ApplicationController
   def index
     limit = params[:limit].to_i
     limit = 50 if limit <= 0
+    limit = 100 if limit > 100
 
     events =
         TheatreSkipEvent