diff --git a/app/soapbox/locales/ja.json b/app/soapbox/locales/ja.json
index cb7311981..172da1381 100644
--- a/app/soapbox/locales/ja.json
+++ b/app/soapbox/locales/ja.json
@@ -18,7 +18,7 @@
   "account.endorse.success": "プロフィールで@{acct}を紹介しています",
   "account.familiar_followers": "{accounts}にフォローされています",
   "account.familiar_followers.empty": "あなたの知り合いで{name}さんをフォローしている人はいません。",
-  "account.familiar_followers.more": "{count} {count, plural, one {other} other {others}} you follow",
+  "account.familiar_followers.more": "{count} 人のおすすめユーザー",
   "account.follow": "フォロー",
   "account.followers": "フォロワー",
   "account.followers.empty": "まだ誰もフォローしていません。",
@@ -47,6 +47,7 @@
   "account.report": "@{name}さんを通報",
   "account.requested": "フォロー承認待ちです。クリックしてキャンセル",
   "account.requested_small": "承認待ち",
+  "account.rss_feed": "RSSフィードを登録する",
   "account.search": "@{name}さんを検索",
   "account.search_self": "自分の投稿を検索",
   "account.share": "@{name}さんのプロフィールを共有する",
@@ -102,7 +103,7 @@
   "admin.dashcounters.user_count_label": "total users",
   "admin.dashwidgets.email_list_header": "Email list",
   "admin.dashwidgets.software_header": "Software",
-  "admin.latest_accounts_panel.more": "Click to see {count} {count, plural, one {account} other {accounts}}",
+  "admin.latest_accounts_panel.more": "クリックして {count} 人のおすすめユーザーを表示",
   "admin.latest_accounts_panel.title": "Latest Accounts",
   "admin.moderation_log.empty_message": "You have not performed any moderation actions yet. When you do, a history will be shown here.",
   "admin.reports.actions.close": "Close",
@@ -110,12 +111,15 @@
   "admin.reports.empty_message": "There are no open reports. If a user gets reported, they will show up here.",
   "admin.reports.report_closed_message": "Report on @{name} was closed",
   "admin.reports.report_title": "Report on {acct}",
+  "admin.software.backend": "バックエンド",
+  "admin.software.frontend": "フロントエンド",
   "admin.statuses.actions.delete_status": "Delete post",
   "admin.statuses.actions.mark_status_not_sensitive": "Mark post not sensitive",
   "admin.statuses.actions.mark_status_sensitive": "Mark post sensitive",
   "admin.statuses.status_deleted_message": "Post by @{acct} was deleted",
   "admin.statuses.status_marked_message_not_sensitive": "Post by @{acct} was marked not sensitive",
   "admin.statuses.status_marked_message_sensitive": "Post by @{acct} was marked sensitive",
+  "admin.theme.title": "テーマ",
   "admin.user_index.empty": "No users found.",
   "admin.user_index.search_input_placeholder": "Who are you looking for?",
   "admin.users.actions.deactivate_user": "Deactivate @{name}",
@@ -136,7 +140,7 @@
   "admin_nav.awaiting_approval": "Awaiting Approval",
   "admin_nav.dashboard": "Dashboard",
   "admin_nav.reports": "Reports",
-  "age_verification.body": "{siteTitle} requires users to be at least {ageMinimum} years old to access its platform. Anyone under the age of {ageMinimum} years old cannot access this platform.",
+  "age_verification.body": "{siteTitle} にアクセスするには {ageMinimum} 歳である必要があります。{ageMinimum} 歳未満の方はアクセスできません。",
   "age_verification.fail": "You must be {ageMinimum, plural, one {# year} other {# years}} old or older.",
   "age_verification.header": "Enter your birth date",
   "alert.unexpected.body": "We're sorry for the interruption. If the problem persists, please reach out to our support team. You may also try to {clearCookies} (this will log you out).",
@@ -166,6 +170,7 @@
   "app_create.scopes_placeholder": "e.g. 'read write follow'",
   "app_create.submit": "Create app",
   "app_create.website_label": "Website",
+  "auth.awaiting_approval": "あなたのアカウントが承認待ちになりました",
   "auth.invalid_credentials": "Wrong username or password",
   "auth.logged_out": "Logged out.",
   "auth_layout.register": "Create an account",
@@ -185,6 +190,37 @@
   "bundle_modal_error.message": "コンポーネントの読み込み中に問題が発生しました。",
   "bundle_modal_error.retry": "再試行",
   "card.back.label": "Back",
+  "chat.actions.send": "送信",
+  "chat.failed_to_send": "メッセージの送信に失敗しました。",
+  "chat.input.placeholder": "メッセージを入力",
+  "chat.new_message.title": "新しいメッセージ",
+  "chat.page_settings.accepting_messages.label": "ユーザーがあなたと新しいチャットを開始することを許可する",
+  "chat.page_settings.play_sounds.label": "メッセージを受信したときにサウンドを再生する",
+  "chat.page_settings.preferences": "ユーザー設定",
+  "chat.page_settings.privacy": "プライバシー",
+  "chat.page_settings.submit": "保存",
+  "chat.page_settings.title": "メッセージ設定",
+  "chat.retry": "再試行しますか？",
+  "chat.welcome.accepting_messages.label": "ユーザーがあなたと新しいチャットを開始することを許可する",
+  "chat.welcome.notice": "これらの設定は後で変更できます。",
+  "chat.welcome.submit": "保存して続行",
+  "chat.welcome.subtitle": "他のユーザーとダイレクトメッセージを交換します。",
+  "chat.welcome.title": "チャットへ {br} ようこそ！",
+  "chat_composer.unblock": "ブロック解除",
+  "chat_list_item.blocked_you": "このユーザーはあなたをブロックしています",
+  "chat_list_item.blocking": "このユーザーをブロックしています",
+  "chat_message_list.blocked": "このユーザーをブロックしました",
+  "chat_message_list.blockedBy": "このユーザーからブロックされています:",
+  "chat_message_list.network_failure.action": "再試行",
+  "chat_message_list.network_failure.subtitle": "ネットワークに問題が発生しました。",
+  "chat_message_list.network_failure.title": "おっと！",
+  "chat_message_list_intro.actions.accept": "許可",
+  "chat_message_list_intro.actions.leave_chat": "チャットから退出",
+  "chat_message_list_intro.actions.message_lifespan": "{day} より前のメッセージが削除されます。",
+  "chat_message_list_intro.actions.report": "報告",
+  "chat_message_list_intro.intro": "があなたとチャットを開始しようとしています",
+  "chat_message_list_intro.leave_chat.confirm": "チャットから退出",
+  "chat_message_list_intro.leave_chat.heading": "チャットから退出",
   "chats.actions.delete": "メッセージを削除",
   "chats.actions.more": "もっと",
   "chats.actions.report": "ユーザを通報",