diff --git a/src/App.jsx b/src/App.jsx
index 3efef2f..9f1d03d 100644
--- a/src/App.jsx
+++ b/src/App.jsx
@@ -20,8 +20,8 @@ export default function App() {
   const [timeScale, setTimeScale] = useState(100);
   const [camSpeed, setCamSpeed] = useState(0.05);
   const [vrmModel, setVrmModel] = useState('ai.vrm');
-  const [lang, setLang] = useState('ja');
-  const langRef = useRef('ja');
+  const [lang, setLang] = useState('en');
+  const langRef = useRef('en');
   const voiceIndexRef = useRef(0);
   const voicePattern = ['normal','normal','normal','normal','normal','normal','normal','normal','skill','skill'];
   const actionIndexRef = useRef(0);
diff --git a/src/AvatarScene.jsx b/src/AvatarScene.jsx
index a6c738c..9336bb1 100644
--- a/src/AvatarScene.jsx
+++ b/src/AvatarScene.jsx
@@ -124,7 +124,7 @@ export default function AvatarScene({ selectedAnimation: animState, onZoomOut, c
       const timer = setTimeout(() => setEffect(null), SKILL_DURATION);
       return () => clearTimeout(timer);
     } else if (animName === 'fly_dodge') {
-      setEffect({ type: 'moon' });
+      setEffect({ type: 'earth' });
       const timer = setTimeout(() => setEffect(null), SKILL_DURATION);
       return () => clearTimeout(timer);
     }
diff --git a/src/SkillEffects.jsx b/src/SkillEffects.jsx
index 78968fe..d3904cd 100644
--- a/src/SkillEffects.jsx
+++ b/src/SkillEffects.jsx
@@ -2,113 +2,141 @@ import React, { useRef, useMemo } from 'react';
 import { useFrame } from '@react-three/fiber';
 import * as THREE from 'three';
 
-const SPHERE_PRESETS = {
+// --- Galaxy Effect (skill) ---
+
+const GALAXY_COUNT = 600;
+const ARM_COUNT = 4;
+const MAX_RADIUS = 0.6;
+
+const GALAXY_PRESETS = {
   sun: {
-    layers: [
-      { radius: 0.3, segments: 64, size: 0.015, opacity: 0.5 },
-      { radius: 0.22, segments: 48, size: 0.02, opacity: 0.3 },
-      { radius: 0.38, segments: 40, size: 0.008, opacity: 0.2 },
-    ],
+    coreColor: [1.0, 0.8, 0.3],
+    armColor: [1.0, 0.5, 0.1],
+    tipColor: [1.0, 1.0, 0.7],
     lightColor: '#ffaa22',
     lightIntensity: 1.5,
-    rotateSpeed: 1.5,
-    pulseSpeed: 2.0,
-    pulseRange: 0.25,
-    colorFn: (normDist, layerIdx) => {
-      if (layerIdx === 0) return [1.0, 0.7 + normDist * 0.3, 0.1];
-      if (layerIdx === 1) return [1.0, 0.4, 0.05];
-      return [1.0, 0.9, 0.5];
-    },
-  },
-  moon: {
-    layers: [
-      { radius: 0.2, segments: 48, size: 0.01, opacity: 0.4 },
-      { radius: 0.26, segments: 32, size: 0.006, opacity: 0.15 },
-    ],
-    lightColor: '#aaccff',
-    lightIntensity: 1.0,
     rotateSpeed: 0.8,
-    pulseSpeed: 1.0,
-    pulseRange: 0.12,
-    colorFn: (normDist, layerIdx) => {
-      if (layerIdx === 0) return [0.7, 0.8, 1.0];
-      return [0.5, 0.6, 1.0];
-    },
-  },
-  earth: {
-    layers: [
-      { radius: 0.25, segments: 56, size: 0.012, opacity: 0.7 },
-      { radius: 0.32, segments: 36, size: 0.007, opacity: 0.25 },
-    ],
-    lightColor: '#44aaff',
-    lightIntensity: 2.5,
-    rotateSpeed: 1.0,
-    pulseSpeed: 1.5,
-    pulseRange: 0.18,
-    colorFn: (normDist, layerIdx) => {
-      if (layerIdx === 0) return [0.2, 0.6 + normDist * 0.4, 1.0];
-      return [0.1, 0.8, 0.6];
-    },
-  },
-  neutron: {
-    layers: [
-      { radius: 0.15, segments: 72, size: 0.008, opacity: 0.9 },
-      { radius: 0.1, segments: 48, size: 0.015, opacity: 0.6 },
-      { radius: 0.22, segments: 32, size: 0.005, opacity: 0.3 },
-    ],
-    lightColor: '#8844ff',
-    lightIntensity: 4,
-    rotateSpeed: 3.0,
-    pulseSpeed: 3.0,
-    pulseRange: 0.35,
-    colorFn: (normDist, layerIdx) => {
-      if (layerIdx === 0) return [0.9, 0.3, 1.0];
-      if (layerIdx === 1) return [1.0, 1.0, 1.0];
-      return [0.5, 0.1, 1.0];
-    },
+    spread: 1.0,
   },
 };
 
-function ParticleLayer({ radius, segments, size, opacity, colorFn, layerIdx }) {
-  const data = useMemo(() => {
-    const geo = new THREE.SphereGeometry(radius, segments, segments);
-    const posArr = new Float32Array(geo.attributes.position.array);
-    const colArr = new Float32Array(posArr.length);
-    for (let i = 0; i < posArr.length; i += 3) {
-      const x = posArr[i], y = posArr[i + 1], z = posArr[i + 2];
-      const dist = Math.sqrt(x * x + y * y + z * z);
-      const normDist = dist / (radius || 1);
-      const [r, g, b] = colorFn(normDist, layerIdx);
-      colArr[i] = r;
-      colArr[i + 1] = g;
-      colArr[i + 2] = b;
+function buildGalaxy(preset) {
+  const positions = new Float32Array(GALAXY_COUNT * 3);
+  const colors = new Float32Array(GALAXY_COUNT * 3);
+  const randoms = new Float32Array(GALAXY_COUNT);
+
+  for (let i = 0; i < GALAXY_COUNT; i++) {
+    const i3 = i * 3;
+    const arm = i % ARM_COUNT;
+    const armAngle = (arm / ARM_COUNT) * Math.PI * 2;
+    const t = Math.random();
+    const r = t * MAX_RADIUS;
+    const twist = t * Math.PI * 2.5;
+    const angle = armAngle + twist;
+    const scatter = (1 - t * 0.5) * 0.08 * preset.spread;
+
+    positions[i3] = Math.cos(angle) * r + (Math.random() - 0.5) * scatter;
+    positions[i3 + 1] = (Math.random() - 0.5) * 0.04 * (1 - t * 0.5);
+    positions[i3 + 2] = Math.sin(angle) * r + (Math.random() - 0.5) * scatter;
+
+    const core = preset.coreColor;
+    const arm_ = preset.armColor;
+    const tip = preset.tipColor;
+    const c = t < 0.3
+      ? core.map((v, j) => v + (arm_[j] - v) * (t / 0.3))
+      : arm_.map((v, j) => v + (tip[j] - v) * ((t - 0.3) / 0.7));
+    colors[i3] = c[0];
+    colors[i3 + 1] = c[1];
+    colors[i3 + 2] = c[2];
+    randoms[i] = Math.random();
+  }
+  return { positions, colors, randoms };
+}
+
+function GalaxyEffect({ position = [0, 1.0, 0], scale = 1 }) {
+  const preset = GALAXY_PRESETS.sun;
+  const groupRef = useRef();
+  const pointsRef = useRef();
+  const { positions, colors, randoms } = useMemo(() => buildGalaxy(preset), []);
+  const basePositions = useRef(positions);
+
+  useFrame(({ clock }) => {
+    if (!groupRef.current || !pointsRef.current) return;
+    const t = clock.getElapsedTime();
+    groupRef.current.rotation.y = t * preset.rotateSpeed;
+    groupRef.current.rotation.x = Math.sin(t * 0.3) * 0.15;
+    const pulse = 1 + Math.sin(t * 2.0) * 0.1;
+    groupRef.current.scale.setScalar(scale * pulse);
+
+    const pos = pointsRef.current.geometry.attributes.position.array;
+    const base = basePositions.current;
+    for (let i = 0; i < GALAXY_COUNT; i++) {
+      const i3 = i * 3;
+      const drift = Math.sin(t * 1.5 + randoms[i] * 10) * 0.02;
+      pos[i3] = base[i3] + drift;
+      pos[i3 + 1] = base[i3 + 1] + Math.sin(t * 2 + randoms[i] * 6) * 0.01;
+      pos[i3 + 2] = base[i3 + 2] + drift * 0.7;
     }
-    geo.dispose();
-    return { positions: posArr, colors: colArr };
-  }, [radius, segments, colorFn, layerIdx]);
+    pointsRef.current.geometry.attributes.position.needsUpdate = true;
+  });
 
   return (
-    <points>
-      <bufferGeometry>
-        <bufferAttribute attach="attributes-position" array={data.positions} count={data.positions.length / 3} itemSize={3} />
-        <bufferAttribute attach="attributes-color" array={data.colors} count={data.colors.length / 3} itemSize={3} />
-      </bufferGeometry>
-      <pointsMaterial
-        transparent
-        depthWrite={false}
-        vertexColors
-        opacity={opacity}
-        size={size}
-        blending={THREE.AdditiveBlending}
-      />
-    </points>
+    <group position={position} ref={groupRef}>
+      <points ref={pointsRef}>
+        <bufferGeometry>
+          <bufferAttribute attach="attributes-position" array={positions.slice()} count={GALAXY_COUNT} itemSize={3} />
+          <bufferAttribute attach="attributes-color" array={colors} count={GALAXY_COUNT} itemSize={3} />
+        </bufferGeometry>
+        <pointsMaterial transparent depthWrite={false} vertexColors opacity={0.6} size={0.012} blending={THREE.AdditiveBlending} />
+      </points>
+      <pointLight intensity={preset.lightIntensity} color={preset.lightColor} distance={3} />
+    </group>
   );
 }
 
-function EnergySphere({ type = 'sun', position = [0, 1.5, 0], scale = 1 }) {
+// --- Sphere Effect (teleport) ---
+
+const SPHERE_PRESET = {
+  layers: [
+    { radius: 0.2, segments: 48, size: 0.01, opacity: 0.4 },
+    { radius: 0.26, segments: 32, size: 0.006, opacity: 0.15 },
+  ],
+  lightColor: '#aaccff',
+  lightIntensity: 0.3,
+  rotateSpeed: 0.8,
+  pulseSpeed: 1.0,
+  pulseRange: 0.12,
+  colorFn: (normDist, layerIdx) => {
+    if (layerIdx === 0) return [1.0, 0.8 + normDist * 0.15, 0.2];
+    return [1.0, 0.7, 0.1];
+  },
+};
+
+function buildSphereLayer(radius, segments, colorFn, layerIdx) {
+  const geo = new THREE.SphereGeometry(radius, segments, segments);
+  const posArr = new Float32Array(geo.attributes.position.array);
+  const colArr = new Float32Array(posArr.length);
+  for (let i = 0; i < posArr.length; i += 3) {
+    const x = posArr[i], y = posArr[i + 1], z = posArr[i + 2];
+    const dist = Math.sqrt(x * x + y * y + z * z);
+    const normDist = dist / (radius || 1);
+    const [r, g, b] = colorFn(normDist, layerIdx);
+    colArr[i] = r;
+    colArr[i + 1] = g;
+    colArr[i + 2] = b;
+  }
+  geo.dispose();
+  return { positions: posArr, colors: colArr };
+}
+
+function SphereEffect({ position = [0, 1.0, 0], scale = 1 }) {
   const groupRef = useRef();
   const layerRefs = useRef([]);
-  const preset = SPHERE_PRESETS[type] || SPHERE_PRESETS.sun;
+  const preset = SPHERE_PRESET;
+
+  const layerData = useMemo(() =>
+    preset.layers.map((l, i) => buildSphereLayer(l.radius, l.segments, preset.colorFn, i)),
+  []);
 
   useFrame(({ clock }) => {
     if (!groupRef.current) return;
@@ -130,20 +158,27 @@ function EnergySphere({ type = 'sun', position = [0, 1.5, 0], scale = 1 }) {
     <group position={position} ref={groupRef}>
       {preset.layers.map((layer, i) => (
         <group key={i} ref={el => layerRefs.current[i] = el}>
-          <ParticleLayer
-            radius={layer.radius}
-            segments={layer.segments}
-            size={layer.size}
-            opacity={layer.opacity}
-            colorFn={preset.colorFn}
-            layerIdx={i}
-          />
+          <points>
+            <bufferGeometry>
+              <bufferAttribute attach="attributes-position" array={layerData[i].positions} count={layerData[i].positions.length / 3} itemSize={3} />
+              <bufferAttribute attach="attributes-color" array={layerData[i].colors} count={layerData[i].colors.length / 3} itemSize={3} />
+            </bufferGeometry>
+            <pointsMaterial transparent depthWrite={false} vertexColors opacity={layer.opacity} size={layer.size} blending={THREE.AdditiveBlending} />
+          </points>
         </group>
       ))}
-      <pointLight position={[0, 0, 0]} intensity={preset.lightIntensity} color={preset.lightColor} distance={3} />
     </group>
   );
 }
 
-export { EnergySphere, SPHERE_PRESETS };
+// --- Unified export ---
+
+function EnergySphere({ type = 'sun', position = [0, 1.0, 0], scale = 1 }) {
+  if (type === 'earth' || type === 'moon') {
+    return <SphereEffect position={position} scale={scale} />;
+  }
+  return <GalaxyEffect position={position} scale={scale} />;
+}
+
+export { EnergySphere };
 export default EnergySphere;