diff --git a/aws-sam/gggtracker.cfn.yaml b/aws-sam/gggtracker.cfn.yaml
index 2001a87..b6bf81a 100644
--- a/aws-sam/gggtracker.cfn.yaml
+++ b/aws-sam/gggtracker.cfn.yaml
@@ -89,6 +89,13 @@ Resources:
       DomainName: !Sub www.${DomainName}
       RestApiId: !Ref API
       Stage: !Ref APIStage
+  APIBasePathMappingSubdomain8:
+    Type: AWS::ApiGateway::BasePathMapping
+    DependsOn: APISubdomainName8
+    Properties:
+      DomainName: !Sub jp.${DomainName}
+      RestApiId: !Ref API
+      Stage: !Ref APIStage
   APICloudWatchRole: 
     Type: AWS::IAM::Role
     Properties: 
@@ -165,6 +172,14 @@ Resources:
       EndpointConfiguration:
         Types:
           - EDGE
+  APISubdomainName8:
+    Type: AWS::ApiGateway::DomainName
+    Properties:
+      CertificateArn: !Ref CertificateARN
+      DomainName: !Sub jp.${DomainName}
+      EndpointConfiguration:
+        Types:
+          - EDGE
   APIProxyResource:
     Type: AWS::ApiGateway::Resource
     Properties:
diff --git a/server/localization.go b/server/localization.go
index d558f98..f09210e 100644
--- a/server/localization.go
+++ b/server/localization.go
@@ -155,6 +155,17 @@ var Locales = []*Locale{
 			"Forum":    "Foro",
 		},
 	},
+	{
+		Subdomain: "jp",
+		Image:     "static/images/locales/jp.png",
+		Translations: map[string]string{
+			"Activity": "アクティビティ",
+			"Thread":   "スレッド",
+			"Poster":   "投稿者",
+			"Time":     "日時",
+			"Forum":    "フォーラム",
+		},
+	},
 }
 
 func LocaleForRequest(r *http.Request) *Locale {
diff --git a/server/static/images/locales/jp.png b/server/static/images/locales/jp.png
new file mode 100644
index 0000000..a432ef8
Binary files /dev/null and b/server/static/images/locales/jp.png differ