diff --git a/utils/accountState.tsx b/utils/accountState.tsx
new file mode 100644
index 00000000..3fdb86f4
--- /dev/null
+++ b/utils/accountState.tsx
@@ -0,0 +1,19 @@
+import { proxy } from "valtio";
+
+interface AccountState {
+    [key: string]: any
+    
+    account: {
+        authorized: boolean,
+        language: 'en' | 'jp'
+    }
+}
+
+export const initialAccountState: AccountState = {
+    account: {
+        authorized: false,
+        language: 'en'
+    }
+}
+
+export const accountState = proxy(initialAccountState)
diff --git a/utils/state.tsx b/utils/appState.tsx
similarity index 86%
rename from utils/state.tsx
rename to utils/appState.tsx
index 42f66db4..8ed49ba3 100644
--- a/utils/state.tsx
+++ b/utils/appState.tsx
@@ -1,9 +1,8 @@
 import { proxy } from "valtio";
 
-interface State {
-    app: {
-        authenticated: boolean
-    },
+interface AppState {
+    [key: string]: any
+    
     party: {
         id: string | undefined,
         editable: boolean,
@@ -27,10 +26,7 @@ interface State {
     }
 }
 
-const state: State = {
-    app: {
-        authenticated: false
-    },
+export const initialAppState: AppState = {
     party: {
         id: undefined,
         editable: false,
@@ -54,4 +50,4 @@ const state: State = {
     }
 }
 
-export default proxy(state)
\ No newline at end of file
+export const appState = proxy(initialAppState)
\ No newline at end of file