diff --git a/backend/app/Mail/ContactsMail.php b/backend/app/Mail/ContactsMail.php
index 6b8cae61..543c39e1 100644
--- a/backend/app/Mail/ContactsMail.php
+++ b/backend/app/Mail/ContactsMail.php
@@ -16,7 +16,7 @@ class ContactsMail extends Mailable {
     }
 
     public function build () {
-        return $this->subject('お問い合わせありがとうございます。')->text('emails.contacts', [
+        return $this->subject('【KIKIシステム】お問い合わせありがとうございます。')->text('emails.contacts', [
             'messages' => $this->message
         ]);
     }
diff --git a/backend/app/Mail/FathersApprovalAgainMail.php b/backend/app/Mail/FathersApprovalAgainMail.php
index d827faa9..dcb3a9fb 100644
--- a/backend/app/Mail/FathersApprovalAgainMail.php
+++ b/backend/app/Mail/FathersApprovalAgainMail.php
@@ -18,7 +18,7 @@ class FathersApprovalAgainMail extends Mailable {
     }
 
     public function build () {
-        return $this->subject('KIKI運営事務局からのお知らせ')->text('emails.fathers.approvalagain', [
+        return $this->subject('【KIKIシステム】KIKI運営事務局からのお知らせ')->text('emails.fathers.approvalagain', [
             'father' => $this->father,
             'url' => '/c-account/meeting/detail/'.$this->meeting_id,
         ]);
diff --git a/backend/app/Mail/FathersForgetPasswordMail.php b/backend/app/Mail/FathersForgetPasswordMail.php
index 06848995..34b59ca9 100644
--- a/backend/app/Mail/FathersForgetPasswordMail.php
+++ b/backend/app/Mail/FathersForgetPasswordMail.php
@@ -16,7 +16,7 @@ class FathersForgetPasswordMail extends Mailable {
     }
 
     public function build () {
-        return $this->subject('パスワードリセットを依頼しました。')->text('emails.fathers.forgotpassword', [
+        return $this->subject('【KIKIシステム】パスワードリセットを依頼しました。')->text('emails.fathers.forgotpassword', [
             'url' => '/p-account/forgot-password/reset/'.$this->token,
         ]);
     }
diff --git a/backend/app/Mail/MeetingEditAwareness.php b/backend/app/Mail/MeetingEditAwareness.php
index 13f43fdc..bb75ac30 100644
--- a/backend/app/Mail/MeetingEditAwareness.php
+++ b/backend/app/Mail/MeetingEditAwareness.php
@@ -18,7 +18,7 @@ class MeetingEditAwareness extends Mailable {
     }
 
     public function build () {
-        return $this->subject('KIKI運営事務局からのお知らせ')->text('emails.fathers.meetingawareness', [
+        return $this->subject('【KIKIシステム】KIKI運営事務局からのお知らせ')->text('emails.fathers.meetingawareness', [
             'child' => $this->child,
             'url' => '/p-account/meeting/detail/'.$this->meeting_id,
         ]);
diff --git a/backend/resources/js/component/withdrawal_complete.jsx b/backend/resources/js/component/withdrawal_complete.jsx
index 5a0fd862..f0cdccf6 100644
--- a/backend/resources/js/component/withdrawal_complete.jsx
+++ b/backend/resources/js/component/withdrawal_complete.jsx
@@ -7,7 +7,7 @@ const WithdrawalComplete = () => {
 
     if(pathname.includes('c-account')) url = '/c-account/login';
     else if(pathname.includes('p-account')) url = '/p-account/login';
-    
+
 	return (
     <div className="l-single-container">
         <div className="l-single-inner">
@@ -24,4 +24,4 @@ const WithdrawalComplete = () => {
 	)
 }
 
-export default WithdrawalComplete;
\ No newline at end of file
+export default WithdrawalComplete;
diff --git a/backend/resources/views/emails/children/registration/main.blade.php b/backend/resources/views/emails/children/registration/main.blade.php
index ea17cd40..fcecc36f 100644
--- a/backend/resources/views/emails/children/registration/main.blade.php
+++ b/backend/resources/views/emails/children/registration/main.blade.php
@@ -6,6 +6,13 @@
 ログイン後ホームにブックマーク登録お願いします。
 
 
-運営会社:株式会社ZOTMAN
+━━━━━━━━━━━━━━━━━━━━
+▼ご不明な点やお問い合せ
+https://kikikan.jp/
+
+▼運営会社
+株式会社ZOTMAN
 埼玉県飯能市双柳1490-1
-お問合せ:56@zotman.jp
+56@zotman.jp
+http://zotman.jp
+━━━━━━━━━━━━━━━━━━━━
diff --git a/backend/resources/views/emails/contacts.blade.php b/backend/resources/views/emails/contacts.blade.php
index 34be5fe8..9989a217 100644
--- a/backend/resources/views/emails/contacts.blade.php
+++ b/backend/resources/views/emails/contacts.blade.php
@@ -6,6 +6,13 @@
 上記、お問い合わせを受付させて頂きました。通常1〜2日にて回答のご連絡をさせて頂きます。
 
 
-運営会社:株式会社ZOTMAN
+━━━━━━━━━━━━━━━━━━━━
+▼ご不明な点やお問い合せ
+https://kikikan.jp/
+
+▼運営会社
+株式会社ZOTMAN
 埼玉県飯能市双柳1490-1
-お問合せ:56@zotman.jp
+56@zotman.jp
+http://zotman.jp
+━━━━━━━━━━━━━━━━━━━━
diff --git a/backend/resources/views/emails/fathers/approval.blade.php b/backend/resources/views/emails/fathers/approval.blade.php
index 8b4e3d34..fda99720 100644
--- a/backend/resources/views/emails/fathers/approval.blade.php
+++ b/backend/resources/views/emails/fathers/approval.blade.php
@@ -5,6 +5,14 @@
 
 {{ url($url) }}
 
-運営会社:株式会社ZOTMAN
+
+━━━━━━━━━━━━━━━━━━━━
+▼ご不明な点やお問い合せ
+https://kikikan.jp/
+
+▼運営会社
+株式会社ZOTMAN
 埼玉県飯能市双柳1490-1
-お問合せ:56@zotman.jp
+56@zotman.jp
+http://zotman.jp
+━━━━━━━━━━━━━━━━━━━━
diff --git a/backend/resources/views/emails/fathers/approvalagain.blade.php b/backend/resources/views/emails/fathers/approvalagain.blade.php
index e2b8c5b8..b5d0d58e 100644
--- a/backend/resources/views/emails/fathers/approvalagain.blade.php
+++ b/backend/resources/views/emails/fathers/approvalagain.blade.php
@@ -6,6 +6,14 @@
 
 {{ url($url) }}
 
-運営会社:株式会社ZOTMAN
+
+━━━━━━━━━━━━━━━━━━━━
+▼ご不明な点やお問い合せ
+https://kikikan.jp/
+
+▼運営会社
+株式会社ZOTMAN
 埼玉県飯能市双柳1490-1
-お問合せ:56@zotman.jp
+56@zotman.jp
+http://zotman.jp
+━━━━━━━━━━━━━━━━━━━━
diff --git a/backend/resources/views/emails/fathers/forgotpassword.blade.php b/backend/resources/views/emails/fathers/forgotpassword.blade.php
index 8c4546ba..37323486 100644
--- a/backend/resources/views/emails/fathers/forgotpassword.blade.php
+++ b/backend/resources/views/emails/fathers/forgotpassword.blade.php
@@ -5,6 +5,13 @@
 {{ url($url) }}
 
 
-運営会社:株式会社ZOTMAN
+━━━━━━━━━━━━━━━━━━━━
+▼ご不明な点やお問い合せ
+https://kikikan.jp/
+
+▼運営会社
+株式会社ZOTMAN
 埼玉県飯能市双柳1490-1
-お問合せ:56@zotman.jp
+56@zotman.jp
+http://zotman.jp
+━━━━━━━━━━━━━━━━━━━━
diff --git a/backend/resources/views/emails/fathers/meetingawareness.blade.php b/backend/resources/views/emails/fathers/meetingawareness.blade.php
index 04113a79..59a5daae 100644
--- a/backend/resources/views/emails/fathers/meetingawareness.blade.php
+++ b/backend/resources/views/emails/fathers/meetingawareness.blade.php
@@ -5,6 +5,13 @@
 {{ url($url) }}
 
 
-運営会社:株式会社ZOTMAN
+━━━━━━━━━━━━━━━━━━━━
+▼ご不明な点やお問い合せ
+https://kikikan.jp/
+
+▼運営会社
+株式会社ZOTMAN
 埼玉県飯能市双柳1490-1
-お問合せ:56@zotman.jp
+56@zotman.jp
+http://zotman.jp
+━━━━━━━━━━━━━━━━━━━━
diff --git a/backend/resources/views/emails/fathers/meetingedit.blade.php b/backend/resources/views/emails/fathers/meetingedit.blade.php
index f706c515..382d9087 100644
--- a/backend/resources/views/emails/fathers/meetingedit.blade.php
+++ b/backend/resources/views/emails/fathers/meetingedit.blade.php
@@ -5,6 +5,13 @@
 {{ url($url) }}
 
 
-運営会社:株式会社ZOTMAN
+━━━━━━━━━━━━━━━━━━━━
+▼ご不明な点やお問い合せ
+https://kikikan.jp/
+
+▼運営会社
+株式会社ZOTMAN
 埼玉県飯能市双柳1490-1
-お問合せ:56@zotman.jp
+56@zotman.jp
+http://zotman.jp
+━━━━━━━━━━━━━━━━━━━━
diff --git a/backend/resources/views/emails/fathers/registration/main.blade.php b/backend/resources/views/emails/fathers/registration/main.blade.php
index ea17cd40..fcecc36f 100644
--- a/backend/resources/views/emails/fathers/registration/main.blade.php
+++ b/backend/resources/views/emails/fathers/registration/main.blade.php
@@ -6,6 +6,13 @@
 ログイン後ホームにブックマーク登録お願いします。
 
 
-運営会社:株式会社ZOTMAN
+━━━━━━━━━━━━━━━━━━━━
+▼ご不明な点やお問い合せ
+https://kikikan.jp/
+
+▼運営会社
+株式会社ZOTMAN
 埼玉県飯能市双柳1490-1
-お問合せ:56@zotman.jp
+56@zotman.jp
+http://zotman.jp
+━━━━━━━━━━━━━━━━━━━━
diff --git a/backend/resources/views/emails/fathers/registration/temporary.blade.php b/backend/resources/views/emails/fathers/registration/temporary.blade.php
index baefa23f..e200a78c 100644
--- a/backend/resources/views/emails/fathers/registration/temporary.blade.php
+++ b/backend/resources/views/emails/fathers/registration/temporary.blade.php
@@ -13,6 +13,14 @@ URLの有効期限を過ぎると、再登録が必要になりますので、
 
 ※このメールに心当たりがない場合は下記のメールにご連絡ください。
 
-運営会社:株式会社ZOTMAN
+
+━━━━━━━━━━━━━━━━━━━━
+▼ご不明な点やお問い合せ
+https://kikikan.jp/
+
+▼運営会社
+株式会社ZOTMAN
 埼玉県飯能市双柳1490-1
-お問合せ:56@zotman.jp
+56@zotman.jp
+http://zotman.jp
+━━━━━━━━━━━━━━━━━━━━
diff --git a/backend/resources/views/sms/children/register/main.blade.php b/backend/resources/views/sms/children/register/main.blade.php
index d699a2c5..f5ce81b8 100644
--- a/backend/resources/views/sms/children/register/main.blade.php
+++ b/backend/resources/views/sms/children/register/main.blade.php
@@ -8,4 +8,16 @@ ID
 {{ $tel }}
 
 パスワード
-{{ $password }}
\ No newline at end of file
+{{ $password }}
+
+
+━━━━━━━━━━━━━━━━━━━━
+▼ご不明な点やお問い合せ
+https://kikikan.jp/
+
+▼運営会社
+株式会社ZOTMAN
+埼玉県飯能市双柳1490-1
+56@zotman.jp
+http://zotman.jp
+━━━━━━━━━━━━━━━━━━━━