diff --git a/adev-ja/src/app/features/update/recommendations.en.ts b/adev-ja/src/app/features/update/recommendations.en.ts
index 4ad177e308..60456e8abe 100644
--- a/adev-ja/src/app/features/update/recommendations.en.ts
+++ b/adev-ja/src/app/features/update/recommendations.en.ts
@@ -2752,7 +2752,7 @@ export const RECOMMENDATIONS: Step[] = [
   },
   {
     action:
-      "In the application's project directory, run `ng update @angular/core@20 @angular/cli@21` to update your application to Angular v21.",
+      "In the application's project directory, run `ng update @angular/core@21 @angular/cli@21` to update your application to Angular v21.",
     level: ApplicationComplexity.Basic,
     necessaryAsOf: 2100,
     possibleIn: 2100,
diff --git a/adev-ja/src/app/features/update/recommendations.ts b/adev-ja/src/app/features/update/recommendations.ts
index ea3c413235..848a716e98 100644
--- a/adev-ja/src/app/features/update/recommendations.ts
+++ b/adev-ja/src/app/features/update/recommendations.ts
@@ -2752,7 +2752,7 @@ export const RECOMMENDATIONS: Step[] = [
   },
   {
     action:
-      "アプリケーションのプロジェクトディレクトリで、`ng update @angular/core@20 @angular/cli@21` を実行して、アプリケーションを Angular v21 に更新します。",
+      "アプリケーションのプロジェクトディレクトリで、`ng update @angular/core@21 @angular/cli@21` を実行して、アプリケーションを Angular v21 に更新します。",
     level: ApplicationComplexity.Basic,
     necessaryAsOf: 2100,
     possibleIn: 2100,
diff --git a/adev-ja/src/content/guide/forms/signals/models.en.md b/adev-ja/src/content/guide/forms/signals/models.en.md
index f0f2fc4e67..92a871918a 100644
--- a/adev-ja/src/content/guide/forms/signals/models.en.md
+++ b/adev-ja/src/content/guide/forms/signals/models.en.md
@@ -14,7 +14,7 @@ Form models solve this by centralizing form data in a single writable signal. Wh
 
 A form model is a writable signal created with Angular's `signal()` function. The signal holds an object that represents your form's data structure.
 
-```ts
+```angular-ts
 import { Component, signal } from '@angular/core'
 import { form, Field } from '@angular/forms/signals'
 
@@ -150,7 +150,7 @@ Each field in the field tree is a function. Calling a field returns a `FieldStat
 
 Access field state when working with individual fields in templates or reactive computations:
 
-```ts
+```angular-ts
 @Component({
   template: `
     <p>Current email: {{ loginForm.email().value() }}</p>
@@ -292,7 +292,7 @@ This synchronization happens automatically. You don't write subscriptions or eve
 
 ### Example: Both directions
 
-```ts
+```angular-ts
 @Component({
   template: `
     <input type="text" [field]="userForm.name" />
@@ -386,7 +386,7 @@ userForm.settings.theme // FieldTree<string>
 
 In templates, you bind nested fields the same way as top-level fields:
 
-```ts
+```angular-ts
 @Component({
   template: `
     <input [field]="userForm.profile.firstName" />
diff --git a/adev-ja/src/content/guide/forms/signals/models.md b/adev-ja/src/content/guide/forms/signals/models.md
index b2db1a0733..b4d3a7e74f 100644
--- a/adev-ja/src/content/guide/forms/signals/models.md
+++ b/adev-ja/src/content/guide/forms/signals/models.md
@@ -14,7 +14,7 @@ NOTE: フォームモデルは、コンポーネントの双方向バインデ
 
 フォームモデルは、Angularの`signal()`関数で作成される書き込み可能なシグナルです。このシグナルは、フォームのデータ構造を表すオブジェクトを保持します。
 
-```ts
+```angular-ts
 import { Component, signal } from '@angular/core'
 import { form, Field } from '@angular/forms/signals'
 
@@ -150,7 +150,7 @@ onSubmit() {
 
 テンプレートやリアクティブな計算で個々のフィールドを扱う場合は、フィールドの状態にアクセスします:
 
-```ts
+```angular-ts
 @Component({
   template: `
     <p>Current email: {{ loginForm.email().value() }}</p>
@@ -292,7 +292,7 @@ export class UserProfileComponent {
 
 ### 例: 両方向 {#example-both-directions}
 
-```ts
+```angular-ts
 @Component({
   template: `
     <input type="text" [field]="userForm.name" />
@@ -386,7 +386,7 @@ userForm.settings.theme // FieldTree<string>
 
 テンプレートでは、トップレベルのフィールドと同じ方法でネストされたフィールドをバインドします:
 
-```ts
+```angular-ts
 @Component({
   template: `
     <input [field]="userForm.profile.firstName" />
diff --git a/adev-ja/src/content/guide/routing/navigate-to-routes.en.md b/adev-ja/src/content/guide/routing/navigate-to-routes.en.md
index 6651cd1418..2992f17bba 100644
--- a/adev-ja/src/content/guide/routing/navigate-to-routes.en.md
+++ b/adev-ja/src/content/guide/routing/navigate-to-routes.en.md
@@ -149,7 +149,7 @@ The `router.navigateByUrl()` method provides a direct way to programmatically na
 
 ```ts
 // Standard route navigation
-router.navigateByUrl('/products);
+router.navigateByUrl('/products');
 
 // Navigate to nested route
 router.navigateByUrl('/products/featured');
diff --git a/adev-ja/src/content/guide/routing/navigate-to-routes.md b/adev-ja/src/content/guide/routing/navigate-to-routes.md
index 1e979f7240..bd00b236f4 100644
--- a/adev-ja/src/content/guide/routing/navigate-to-routes.md
+++ b/adev-ja/src/content/guide/routing/navigate-to-routes.md
@@ -149,7 +149,7 @@ export class UserDetailComponent {
 
 ```ts
 // Standard route navigation
-router.navigateByUrl('/products);
+router.navigateByUrl('/products');
 
 // Navigate to nested route
 router.navigateByUrl('/products/featured');
diff --git a/origin b/origin
index 2ecdb221d3..2ddf26e699 160000
--- a/origin
+++ b/origin
@@ -1 +1 @@
-Subproject commit 2ecdb221d3bd80ddfd1817385d9ecc23c9002b5a
+Subproject commit 2ddf26e69906a09dfcc915cc44c3a0bcecd3af67
diff --git a/tools/adev-patches/replace-environment-values.patch b/tools/adev-patches/replace-environment-values.patch
index 5c2d706ff0..21864c9cd4 100644
--- a/tools/adev-patches/replace-environment-values.patch
+++ b/tools/adev-patches/replace-environment-values.patch
@@ -1,18 +1,16 @@
 diff --git a/adev/src/app/environment.ts b/adev/src/app/environment.ts
-index 733b01d357..c84ac6bf7c 100644
+index 4a8b03193f..7491f820f7 100644
 --- a/adev/src/app/environment.ts
 +++ b/adev/src/app/environment.ts
-@@ -11,11 +11,11 @@ export default {
+@@ -21,9 +21,9 @@ export default {
    // Those values are publicly visible in the search request headers, and presents search-only keys.
    // https://www.algolia.com/doc/guides/security/api-keys/#search-only-api-key
    algolia: {
 -    appId: 'L1XWT2UJ7F',
 -    apiKey: 'dfca7ed184db27927a512e5c6668b968',
+-    indexName: indexName,
 +    appId: 'D4RZISVST0',
 +    apiKey: '77e5a0684280325e2e1f313e0fcc11b8',
-     // The indexName value must match the branch it's on.
-     // So it needs to be updated on release of the new major on the patch branch.
--    indexName: 'angular_next_dev',
 +    indexName: 'angular_jp_v19',
    },
 -  googleAnalyticsId: 'G-XB6NEVW32B',