diff --git a/src/components/media/SpriteImage.vue b/src/components/media/SpriteImage.vue
index 719d11e..42d004d 100644
--- a/src/components/media/SpriteImage.vue
+++ b/src/components/media/SpriteImage.vue
@@ -1,6 +1,6 @@
 <script setup lang="ts">
 import {
-  onMounted, onUnmounted, ref, watch,
+  computed, onMounted, onUnmounted, ref, watch,
 } from 'vue';
 
 import type { SpriteImage } from '../../story/interpreter';
@@ -11,6 +11,7 @@ const props = defineProps<{
   container: HTMLDivElement,
   framed?: boolean,
 }>();
+const url = computed(() => `url(${props.sprite.image.src})`);
 
 const idealHeightRatio = 1;
 const idealWHRatio = 11 / 16;
@@ -79,7 +80,7 @@ watch(() => props.framed, updateImageProperties);
 </script>
 
 <template>
-  <div class="sprite"
+  <div class="sprite" :class="sprite.effects ?? []"
     :style="{ left: `${center}px` }"
   >
     <div class="sprite-frame"
@@ -155,11 +156,36 @@ watch(() => props.framed, updateImageProperties);
   z-index: 1;
   width: 100%;
   height: 100%;
-  background-image: radial-gradient(#cccc 0, #0ff3 0.6px);
+  background-image: radial-gradient(#ccc7 0, #0ff3 0.6px);
   background-size: 3px 3px;
   overflow: hidden;
 }
 
+.sprite.stealth {
+  opacity: 0.5;
+  filter: drop-shadow(0 0 5px cyan) blur(2px);
+}
+
+@supports (mask-type: luminance) {
+  .sprite.stealth {
+    filter: blur(1px) drop-shadow(0 0 2px cyan);
+    opacity: 0.6;
+  }
+  .sprite.stealth .sprite-frame {
+    mask-image: v-bind(url);
+    mask-size: cover;
+    mask-mode: luminance;
+    background-color: #47f;
+  }
+  .sprite.stealth .sprite-frame img {
+    mix-blend-mode: luminosity;
+    mask-image: v-bind(url);
+    mask-size: cover;
+    mask-mode: luminance;
+    filter: grayscale(1) brightness(0.5) contrast(5);
+  }
+}
+
 .sprite img[src=""] {
   opacity: 0;
 }
diff --git a/src/components/viewer/StoryTeller.vue b/src/components/viewer/StoryTeller.vue
index e5e921e..2fedead 100644
--- a/src/components/viewer/StoryTeller.vue
+++ b/src/components/viewer/StoryTeller.vue
@@ -87,7 +87,17 @@ function updateLine(line: string, tags: Record<string, string>) {
   narratorColor.value = tags.color ?? '';
   if (tags.sprites !== undefined) {
     sprites.value = tags.sprites.split('|').map(toText)
-      .map((s) => (s === '' ? null : story.getImage(s)))
+      .map((s) => {
+        const [name, n, effects] = s.split('/');
+        const image = s === '' ? null : story.getImage(`${name}/${n}`);
+        if (effects === '') {
+          return image;
+        }
+        return {
+          ...image,
+          effects: effects.split(','),
+        };
+      })
       .filter((s) => s) as SpriteImage[];
   }
   if (tags.remote !== undefined) {
diff --git a/src/story/interpreter.ts b/src/story/interpreter.ts
index 3d35bbe..6558245 100644
--- a/src/story/interpreter.ts
+++ b/src/story/interpreter.ts
@@ -21,6 +21,7 @@ export type Tags = {
 
 export interface SpriteImage extends CharacterSprite {
   image: HTMLImageElement;
+  effects?: string[];
 }
 
 function fetchSpriteImage(character: string, s: CharacterSprite) {
diff --git a/unpack/gf-data-ch b/unpack/gf-data-ch
index 76a594d..2467a74 160000
--- a/unpack/gf-data-ch
+++ b/unpack/gf-data-ch
@@ -1 +1 @@
-Subproject commit 76a594d6b9021d0d1cc0a75d84c8f86ae6cf1df7
+Subproject commit 2467a74ea1b8fb189b697853f79875eaffddb685
diff --git a/unpack/src/gfunpack/manual_chapters.py b/unpack/src/gfunpack/manual_chapters.py
index d27c5fa..170f4e2 100644
--- a/unpack/src/gfunpack/manual_chapters.py
+++ b/unpack/src/gfunpack/manual_chapters.py
@@ -193,6 +193,8 @@ def _extra_stories_gunslinger():
     ('-61', 'C.E. 2023 思域迷航', '2023', []),
     ('-62', 'C.E. 2023 许可！二次加载', '2023', []),
 
+    ('-70', '零电荷', '', []),
+
     ('-8', '猎兔行动', '《苍翼默示录》x《罪恶装备》联动内容', []),
     ('-14,-15', '独法师', '《崩坏学园2》联动内容', []),
     ('-19,-20,-22', '荣耀日', '《DJMAX RESPECT》联动内容', []),
diff --git a/unpack/src/gfunpack/stories.py b/unpack/src/gfunpack/stories.py
index 1629144..ccc4e35 100644
--- a/unpack/src/gfunpack/stories.py
+++ b/unpack/src/gfunpack/stories.py
@@ -74,6 +74,9 @@
     },
 }
 
+_sprite_effects = {
+    '隐身': 'stealth',
+}
 
 class StoryResources:
     audio: dict[str, str]
@@ -173,7 +176,12 @@ def _parse_narrators(self, narrators: str):
                 sprites.append(('', 0, {}))
             else:
                 attrs = self._parse_effects(narrator)
-                sprites.append((sprite.group(1), int(sprite.group(2)), attrs))
+                name = sprite.group(1)
+                if '#' in name:
+                    name, effect = name.split('#')
+                    assert effect in _sprite_effects, f'unknown sprite effect {effect}'
+                    attrs[_sprite_effects[effect]] = ''
+                sprites.append((name, int(sprite.group(2)), attrs))
         return sprites, speakers[-1] if len(speakers) > 0 else ''
 
     def _parse_effects(self, effects: str):
@@ -318,7 +326,8 @@ def _process_sprites(self, narrator_string: str):
             if character not in self._sprites:
                 self._sprites[character] = {}
             self._sprites[character][sprite] = ''
-        sprite_string = '|'.join(f'{character}/{sprite}' for character, sprite, _ in sprites)
+        sprite_string = '|'.join(f'{character}/{sprite}/{",".join(effects.keys())}'
+                                 for character, sprite, effects in sprites)
         self._remote_narrators = set(
             character for character, _, attrs in sprites
             if '通讯框' in attrs or character in self._remote_narrators