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 7f8f63e92..600836a5b 100644
--- a/packages/stage-ui-live2d/src/components/scenes/live2d/Model.vue
+++ b/packages/stage-ui-live2d/src/components/scenes/live2d/Model.vue
@@ -165,7 +165,7 @@ const beatSync = createBeatSyncController({
 })
 
 // Listen for model reload requests (e.g., when runtime motion is uploaded)
-live2dStore.onShouldUpdateView(() => {
+const disposeShouldUpdateView = live2dStore.onShouldUpdateView(() => {
   loadModel()
 })
 
@@ -620,6 +620,7 @@ onMounted(async () => {
 
 onUnmounted(() => {
   isUnmounted = true
+  disposeShouldUpdateView?.()
 })
 
 function listMotionGroups() {
diff --git a/packages/stage-ui-live2d/src/stores/live2d.ts b/packages/stage-ui-live2d/src/stores/live2d.ts
index 20e283fe1..ccd75de04 100644
--- a/packages/stage-ui-live2d/src/stores/live2d.ts
+++ b/packages/stage-ui-live2d/src/stores/live2d.ts
@@ -36,10 +36,13 @@ export const defaultModelParameters = {
 
 export const useLive2d = defineStore('live2d', () => {
   const { post, data } = useBroadcastChannel<BroadcastChannelEvents, BroadcastChannelEvents>({ name: 'airi-stores-live2d' })
-  const shouldUpdateViewHooks = ref<Array<() => void>>([])
+  const shouldUpdateViewHooks = ref(new Set<() => void>())
 
   const onShouldUpdateView = (hook: () => void) => {
-    shouldUpdateViewHooks.value.push(hook)
+    shouldUpdateViewHooks.value.add(hook)
+    return () => {
+      shouldUpdateViewHooks.value.delete(hook)
+    }
   }
 
   function shouldUpdateView() {
diff --git a/packages/stage-ui-three/src/stores/model-store.ts b/packages/stage-ui-three/src/stores/model-store.ts
index 1ffcccfd1..7e9a643f7 100644
--- a/packages/stage-ui-three/src/stores/model-store.ts
+++ b/packages/stage-ui-three/src/stores/model-store.ts
@@ -61,10 +61,13 @@ interface BroadcastChannelEventShouldUpdateView {
 
 export const useModelStore = defineStore('modelStore', () => {
   const { post, data } = useBroadcastChannel<BroadcastChannelEvents, BroadcastChannelEvents>({ name: 'airi-stores-live2d' })
-  const shouldUpdateViewHooks = ref<Array<() => void>>([])
+  const shouldUpdateViewHooks = ref(new Set<() => void>())
 
   const onShouldUpdateView = (hook: () => void) => {
-    shouldUpdateViewHooks.value.push(hook)
+    shouldUpdateViewHooks.value.add(hook)
+    return () => {
+      shouldUpdateViewHooks.value.delete(hook)
+    }
   }
 
   function shouldUpdateView() {
diff --git a/packages/stage-ui/src/components/scenes/Stage.vue b/packages/stage-ui/src/components/scenes/Stage.vue
index 3114c9a96..3721ee297 100644
--- a/packages/stage-ui/src/components/scenes/Stage.vue
+++ b/packages/stage-ui/src/components/scenes/Stage.vue
@@ -101,6 +101,7 @@ const live2dStore = useLive2d()
 const vrmStore = useModelStore()
 
 const showStage = ref(true)
+const viewUpdateCleanups: Array<() => void> = []
 
 // Caption + Presentation broadcast channels
 type CaptionChannelEvent
@@ -114,23 +115,21 @@ type PresentEvent
     | { type: 'assistant-append', text: string }
 const { post: postPresent } = useBroadcastChannel<PresentEvent, PresentEvent>({ name: 'airi-chat-present' })
 
-// TODO: duplicate calls may happen if this component mounted multiple times
-live2dStore.onShouldUpdateView(async () => {
+viewUpdateCleanups.push(live2dStore.onShouldUpdateView(async () => {
   showStage.value = false
   await settingsStore.updateStageModel()
   setTimeout(() => {
     showStage.value = true
   }, 100)
-})
+}))
 
-// TODO: duplicate calls may happen if this component mounted multiple times
-vrmStore.onShouldUpdateView(async () => {
+viewUpdateCleanups.push(vrmStore.onShouldUpdateView(async () => {
   showStage.value = false
   await settingsStore.updateStageModel()
   setTimeout(() => {
     showStage.value = true
   }, 100)
-})
+}))
 
 const audioAnalyser = ref<AnalyserNode>()
 const nowSpeaking = ref(false)
@@ -353,6 +352,7 @@ onUnmounted(() => {
   }
 
   chatHookCleanups.forEach(dispose => dispose?.())
+  viewUpdateCleanups.forEach(dispose => dispose?.())
 })
 
 defineExpose({