diff --git a/imports/i18n/data/ja-HI.i18n.json b/imports/i18n/data/ja-HI.i18n.json
index 691f72b1d..fda252e8e 100644
--- a/imports/i18n/data/ja-HI.i18n.json
+++ b/imports/i18n/data/ja-HI.i18n.json
@@ -1,7 +1,7 @@
 {
-  "accept": "Accept",
-  "act-activity-notify": "Activity Notification",
-  "act-addAttachment": "added attachment __attachment__ to card __card__ at list __list__ at swimlane __swimlane__ at board __board__",
+  "accept": "受け入れ",
+  "act-activity-notify": "アクティビティ通知",
+  "act-addAttachment": "添付ファイル __attachment__ を ボード __board__, スイムレーン __swimlane__, リスト __list__, カード __card__ に追加しました",
   "act-deleteAttachment": "deleted attachment __attachment__ at card __card__ at list __list__ at swimlane __swimlane__ at board __board__",
   "act-addSubtask": "added subtask __subtask__ to card __card__ at list __list__ at swimlane __swimlane__ at board __board__",
   "act-addLabel": "Added label __label__ to card __card__ at list __list__ at swimlane __swimlane__ at board __board__",
@@ -92,10 +92,10 @@
   "close-add-checklist-item": "Close add an item to checklist form",
   "close-edit-checklist-item": "Close edit an item to checklist form",
   "convertChecklistItemToCardPopup-title": "Convert to Card",
-  "add-cover": "Add cover image to minicard",
+  "add-cover": "ミニカードに表紙画像を追加する",
   "add-label": "Add Label",
   "add-list": "Add List",
-  "add-after-list": "Add After List",
+  "add-after-list": "リストの最後に追加",
   "add-members": "Add Members",
   "added": "Added",
   "addMemberPopup-title": "Members",
@@ -135,13 +135,13 @@
   "attachmentDeletePopup-title": "Delete Attachment?",
   "attachments": "Attachments",
   "auto-watch": "Automatically watch boards when they are created",
-  "avatar-too-big": "The avatar is too large (__size__ max)",
+  "avatar-too-big": "アバターが大きすぎます（最大520KB）",
   "back": "Back",
   "board-change-color": "Change color",
-  "board-change-background-image": "Change Background Image",
-  "board-background-image-url": "Background Image URL",
-  "add-background-image": "Add Background Image",
-  "remove-background-image": "Remove Background Image",
+  "board-change-background-image": "背景画像を変更",
+  "board-background-image-url": "背景画像のURL",
+  "add-background-image": "背景画像を追加",
+  "remove-background-image": "背景画像を削除",
   "show-at-all-boards-page" : "Show at All Boards page",
   "board-info-on-my-boards" : "All Boards Settings",
   "boardInfoOnMyBoardsPopup-title" : "All Boards Settings",
@@ -154,9 +154,9 @@
   "board-public-info": "This board will be <strong>public</strong>.",
   "board-drag-drop-reorder-or-click-open": "Drag and drop to reorder board icons. Click board icon to open board.",
   "boardChangeColorPopup-title": "Change Board Background",
-  "boardChangeBackgroundImagePopup-title": "Change Background Image",
+  "boardChangeBackgroundImagePopup-title": "背景画像を変更",
   "allBoardsChangeColorPopup-title": "Change color",
-  "allBoardsChangeBackgroundImagePopup-title": "Change Background Image",
+  "allBoardsChangeBackgroundImagePopup-title": "背景画像を変更",
   "boardChangeTitlePopup-title": "Rename Board",
   "boardChangeVisibilityPopup-title": "Change Visibility",
   "boardChangeWatchPopup-title": "Change Watch",
@@ -374,7 +374,7 @@
   "error-board-notAMember": "You need to be a member of this board to do that",
   "error-json-malformed": "Your text is not valid JSON",
   "error-json-schema": "Your JSON data does not include the proper information in the correct format",
-  "error-csv-schema": "Your CSV(Comma Separated Values)/TSV (Tab Separated Values) does not include the proper information in the correct format ",
+  "error-csv-schema": "CSV(カンマ区切り)/TSV(タブ区切り)の書式が不正です",
   "error-list-doesNotExist": "This list does not exist",
   "error-user-doesNotExist": "This user does not exist",
   "error-user-notAllowSelf": "You can not invite yourself",
@@ -413,7 +413,7 @@
   "filter-overdue": "Overdue",
   "filter-due-today": "Due today",
   "filter-due-this-week": "Due this week",
-  "filter-due-next-week": "Due next week",
+  "filter-due-next-week": "来週期限",
   "filter-due-tomorrow": "Due tomorrow",
   "list-filter-label": "Filter List by Title",
   "filter-clear": "Clear filter",
@@ -542,7 +542,7 @@
   "public": "Public",
   "public-desc": "This board is public. It's visible to anyone with the link and will show up in search engines like Google. Only people added to the board can edit.",
   "quick-access-description": "Star a board to add a shortcut in this bar.",
-  "remove-cover": "Remove cover image from minicard",
+  "remove-cover": "ミニカードから表紙画像を削除する",
   "remove-from-board": "Remove from Board",
   "remove-label": "Remove Label",
   "listDeletePopup-title": "Delete List ?",
@@ -730,9 +730,9 @@
   "deposit-subtasks-list": "Landing list for subtasks deposited here:",
   "show-parent-in-minicard": "Show parent in minicard:",
   "description-on-minicard": "Description on minicard",
-  "cover-attachment-on-minicard": "Cover image on minicard",
-  "badge-attachment-on-minicard": "Count of attachments on minicard",
-  "card-sorting-by-number-on-minicard": "Card sorting by number on minicard",
+  "cover-attachment-on-minicard": "ミニカードの表紙画像",
+  "badge-attachment-on-minicard": "ミニカードの添付ファイル数",
+  "card-sorting-by-number-on-minicard": "ミニカードの番号順でソートする",
   "prefix-with-full-path": "Prefix with full path",
   "prefix-with-parent": "Prefix with parent",
   "subtext-with-full-path": "Subtext with full path",
@@ -845,7 +845,7 @@
   "r-items-list": "item1,item2,item3",
   "r-add-swimlane": "Add swimlane",
   "r-swimlane-name": "swimlane name",
-  "r-board-note": "Note: leave a field empty to match every possible value. ",
+  "r-board-note": "注意：フィールドを空にするとすべての値に一致します",
   "r-checklist-note": "Note: checklist's items have to be written as comma separated values.",
   "r-when-a-card-is-moved": "When a card is moved to another list",
   "r-set": "Set",
@@ -876,9 +876,9 @@
   "oidc-button-text": "Customize the OIDC button text",
   "default-authentication-method": "Default Authentication Method",
   "duplicate-board": "Duplicate Board",
-  "org-number": "The number of organizations is: ",
-  "team-number": "The number of teams is: ",
-  "people-number": "The number of people is: ",
+  "org-number": "組織数:",
+  "team-number": "チーム数: ",
+  "people-number": "人数:",
   "swimlaneDeletePopup-title": "Delete Swimlane ?",
   "swimlane-delete-pop": "All actions will be removed from the activity feed and you won't be able to recover the swimlane. There is no undo.",
   "restore-all": "Restore all",
@@ -1089,7 +1089,7 @@
   "label-names": "Label Names",
   "archived-at": "archived at",
   "sort-cards": "Sort Cards",
-  "sort-is-on": "Sort is on",
+  "sort-is-on": "ソートが有効",
   "cardsSortPopup-title": "Sort Cards",
   "due-date": "Due Date",
   "server-error": "Server Error",
@@ -1215,10 +1215,10 @@
   "minicardDetailsActionsPopup-title": "Card Details",
   "Mongo_sessions_count": "Mongo sessions count",
   "change-visibility": "Change Visibility",
-  "max-upload-filesize": "Max upload filesize in bytes:",
-  "allowed-upload-filetypes": "Allowed upload filetypes:",
-  "max-avatar-filesize": "Max avatar filesize in bytes:",
-  "allowed-avatar-filetypes": "Allowed avatar filetypes:",
-  "invalid-file": "If filename is invalid, upload or rename is cancelled.",
-  "preview-pdf-not-supported": "Your device does not support previewing PDF. Try downloading instead."
+  "max-upload-filesize": "バイト単位の最大アップロードサイズ: ",
+  "allowed-upload-filetypes": "アップロードできるファイルタイプ",
+  "max-avatar-filesize": "バイト単位の最大アバターファイルサイズ:",
+  "allowed-avatar-filetypes": "アバターに使用できるファイルタイプ",
+  "invalid-file": "無効なファイル名の場合アップロードまたは名前の変更は取り消されます。",
+  "preview-pdf-not-supported": "この端末はPDFのプレビューに対応していません。他の端末でダウンロードしてください。"
 }
diff --git a/imports/i18n/data/ja.i18n.json b/imports/i18n/data/ja.i18n.json
index b957f4aac..1758aa503 100644
--- a/imports/i18n/data/ja.i18n.json
+++ b/imports/i18n/data/ja.i18n.json
@@ -845,7 +845,7 @@
   "r-items-list": "アイテム1、アイテム2、アイテム3",
   "r-add-swimlane": "スイムレーンを追加",
   "r-swimlane-name": "スイムレーン名",
-  "r-board-note": "注意：フィールドを空にすると全ての値に一致します",
+  "r-board-note": "注意：フィールドを空にするとすべての値に一致します",
   "r-checklist-note": "注意：チェックリスト項目はカンマ区切りで記述する必要があります。",
   "r-when-a-card-is-moved": "カードが別のリストに移動したとき",
   "r-set": "設定する",