diff --git a/apps/stage-tamagotchi/src/main/libs/electron/persistence.ts b/apps/stage-tamagotchi/src/main/libs/electron/persistence.ts
index bc9b42a9a..7ff56828d 100644
--- a/apps/stage-tamagotchi/src/main/libs/electron/persistence.ts
+++ b/apps/stage-tamagotchi/src/main/libs/electron/persistence.ts
@@ -1,7 +1,7 @@
 import type { BaseIssue, BaseSchema, InferIssue, InferOutput } from 'valibot'
 
 import { existsSync, readFileSync } from 'node:fs'
-import { writeFile } from 'node:fs/promises'
+import { copyFile, rename, writeFile } from 'node:fs/promises'
 import { join } from 'node:path'
 
 import { safeDestr } from 'destr'
@@ -74,7 +74,10 @@ export function createConfig<TSchema extends PersistedSchema>(
 
   const save = throttle(async () => {
     try {
-      await writeFile(configPath(), JSON.stringify(persistenceMap.get(key)))
+      const path = configPath()
+      const tmpPath = `${path}.tmp`
+      await writeFile(tmpPath, JSON.stringify(persistenceMap.get(key)))
+      await rename(tmpPath, path)
     }
     catch (error) {
       console.error('Failed to save config', error)
@@ -83,7 +86,11 @@ export function createConfig<TSchema extends PersistedSchema>(
 
   const writeHealingConfig = async (value: InferOutput<TSchema>) => {
     try {
-      await writeFile(configPath(), JSON.stringify(value))
+      const path = configPath()
+      if (existsSync(path)) {
+        await copyFile(path, `${path}.bak`).catch(err => console.warn('Failed to create backup for config:', path, err))
+      }
+      await writeFile(path, JSON.stringify(value))
       return true
     }
     catch (error) {
diff --git a/packages/stage-ui-live2d/src/components/scenes/live2d/Model.vue b/packages/stage-ui-live2d/src/components/scenes/live2d/Model.vue
index 600836a5b..721c1e2ec 100644
--- a/packages/stage-ui-live2d/src/components/scenes/live2d/Model.vue
+++ b/packages/stage-ui-live2d/src/components/scenes/live2d/Model.vue
@@ -61,6 +61,7 @@ const props = withDefaults(defineProps<{
 
 const emits = defineEmits<{
   (e: 'modelLoaded'): void
+  (e: 'error', error: Error): void
 }>()
 
 const componentState = defineModel<'pending' | 'loading' | 'mounted'>('state', { default: 'pending' })
@@ -369,6 +370,10 @@ async function loadModel() {
 
     emits('modelLoaded')
   }
+  catch (error) {
+    console.error('[Live2D] Failed to load model:', error)
+    emits('error', error instanceof Error ? error : new Error(String(error)))
+  }
   finally {
     modelLoading.value = false
     componentState.value = 'mounted'
diff --git a/packages/stage-ui-live2d/src/utils/opfs-loader.ts b/packages/stage-ui-live2d/src/utils/opfs-loader.ts
index da3f1cb85..b428deaa8 100644
--- a/packages/stage-ui-live2d/src/utils/opfs-loader.ts
+++ b/packages/stage-ui-live2d/src/utils/opfs-loader.ts
@@ -12,6 +12,18 @@ declare global {
 }
 
 export class OPFSCache {
+  static async clearAll(): Promise<void> {
+    try {
+      const root = await navigator.storage.getDirectory()
+      for await (const entry of root.values()) {
+        await root.removeEntry(entry.name, { recursive: true })
+      }
+    }
+    catch (e) {
+      console.error('[OPFS] Failed to clear cache:', e)
+    }
+  }
+
   static async readDirectoryRecursive(dir: FileSystemDirectoryHandle, pathPrefix: string): Promise<File[]> {
     const files: File[] = []
     for await (const entry of dir.values()) {
diff --git a/packages/stage-ui/src/components/scenarios/settings/model-settings/live2d.vue b/packages/stage-ui/src/components/scenarios/settings/model-settings/live2d.vue
index a2e39e5e1..27296f45e 100644
--- a/packages/stage-ui/src/components/scenarios/settings/model-settings/live2d.vue
+++ b/packages/stage-ui/src/components/scenarios/settings/model-settings/live2d.vue
@@ -1,5 +1,6 @@
 <script setup lang="ts">
 import { defaultModelParameters, useLive2d } from '@proj-airi/stage-ui-live2d'
+import { OPFSCache } from '@proj-airi/stage-ui-live2d/utils/opfs-loader'
 import { Button, Checkbox, FieldRange, SelectTab } from '@proj-airi/ui'
 import { storeToRefs } from 'pinia'
 import { computed, onMounted, onUnmounted, ref, watch } from 'vue'
@@ -81,6 +82,18 @@ function resetToDefaultParameters() {
   modelParameters.value = { ...defaultModelParameters }
 }
 
+const clearingCache = ref(false)
+
+async function clearModelCache() {
+  clearingCache.value = true
+  try {
+    await OPFSCache.clearAll()
+  }
+  finally {
+    clearingCache.value = false
+  }
+}
+
 // Runtime motion selection handlers
 function handleMotionSelect(motion: any) {
   selectedRuntimeMotion.value = motion.displayPath // Store full path
@@ -375,6 +388,14 @@ onUnmounted(() => {
       Reset To Default Parameters
     </button>
 
+    <button
+      mt-2 w-full border rounded bg-neutral-100 px-4 py-2 text-sm text-neutral-700 font-medium transition-colors dark:border-neutral-700 dark:bg-neutral-800 hover:bg-neutral-200 dark:text-neutral-300 dark:hover:bg-neutral-700
+      :disabled="clearingCache"
+      @click="clearModelCache"
+    >
+      {{ clearingCache ? 'Clearing...' : 'Clear Model Cache' }}
+    </button>
+
     <!-- Head Rotation -->
     <div mb-2 mt-4 text-xs text-neutral-500 font-semibold dark:text-neutral-400>
       Head Rotation