diff --git a/ArmTrailRenderer.cs b/ArmTrailRenderer.cs
deleted file mode 100644
index 6371c5e..0000000
--- a/ArmTrailRenderer.cs
+++ /dev/null
@@ -1,396 +0,0 @@
-using System;
-using UnityEngine;
-using VRC.SDK3.Avatars.Components;
-using VRC.SDK3.Avatars.ScriptableObjects;
-using Random = UnityEngine.Random;
-
-public class TrailRenderer : MonoBehaviour
-{
-    [SerializeField] private LineRenderer[] lineRenderers;
-    [SerializeField] private float minTrailDuration = 0.3f;
-    [SerializeField] private float maxTrailDuration = 0.7f;
-    [SerializeField] private float minTrailWidth = 0.005f;
-    [SerializeField] private float maxTrailWidth = 0.015f;
-    [SerializeField] private Gradient defaultTrailColorGradient;
-    [SerializeField] private AudioClip trailSound;
-    [SerializeField] private float minPitch = 0.8f;
-    [SerializeField] private float maxPitch = 1.2f;
-    [SerializeField] private int fftSize = 256;
-    [SerializeField] private float noiseThreshold = 0.1f;
-    [SerializeField] private float trailDurationMultiplier = 1f;
-    [SerializeField] private float trailWidthMultiplier = 1f;
-    [SerializeField] private float fftSizeMultiplier = 1f;
-    [SerializeField] private VRCExpressionParameters expressionParameters;
-    [SerializeField] private VRCAvatarDescriptor avatarDescriptor;
-    [SerializeField] private string[] boneNames;
-
-    private Animator animator;
-    private AudioSource audioSource;
-    private float[] fftSpectrum;
-
-    private void Start()
-    {
-        try
-        {
-            SetupComponents();
-            SetupAudio();
-            SetupFFTSpectrum();
-        }
-        catch (Exception e)
-        {
-            Debug.LogError($"トレイルレンダラーのセットアップ中にエラーが発生しました: {e.Message}");
-            Debug.LogError($"Error setting up TrailRenderer: {e.Message}");
-            enabled = false;
-        }
-    }
-
-    private void SetupComponents()
-    {
-        animator = GetComponentInParent<Animator>();
-        if (animator == null)
-        {
-            throw new InvalidOperationException("アバターにAnimatorコンポーネントが見つかりません。");
-            throw new InvalidOperationException("Animator component not found on the avatar.");
-        }
-
-        if (expressionParameters == null)
-        {
-            throw new InvalidOperationException("VRCExpressionParametersが割り当てられていません。");
-            throw new InvalidOperationException("VRCExpressionParameters not assigned.");
-        }
-
-        if (avatarDescriptor == null)
-        {
-            throw new InvalidOperationException("VRCAvatarDescriptorが割り当てられていません。");
-            throw new InvalidOperationException("VRCAvatarDescriptor not assigned.");
-        }
-
-        for (int i = 0; i < boneNames.Length; i++)
-        {
-            SetupLineRenderer(lineRenderers[i], boneNames[i]);
-        }
-    }
-
-    private void SetupLineRenderer(LineRenderer lineRenderer, string boneName)
-    {
-        if (lineRenderer == null)
-        {
-            lineRenderer = GetLineRendererForBone(boneName);
-            if (lineRenderer == null)
-            {
-                throw new InvalidOperationException($"ボーン「{boneName}」のLineRendererが見つかりません。");
-                throw new InvalidOperationException($"LineRenderer not found for bone '{boneName}'.");
-            }
-        }
-
-        lineRenderer.material = new Material(Shader.Find("Unlit/Color"));
-    }
-
-    private LineRenderer GetLineRendererForBone(string boneName)
-    {
-        var boneTransform = animator.GetBoneTransform(HumanBodyBones.Hips).Find(boneName);
-        if (boneTransform == null)
-        {
-            throw new InvalidOperationException($"ボーン「{boneName}」が見つかりません。");
-            throw new InvalidOperationException($"Bone '{boneName}' not found.");
-        }
-
-        return boneTransform.GetComponentInChildren<LineRenderer>();
-    }
-
-    private void SetupAudio()
-    {
-        audioSource = gameObject.AddComponent<AudioSource>();
-        audioSource.clip = trailSound;
-        audioSource.loop = true;
-        audioSource.playOnAwake = false;
-        audioSource.spatialBlend = 1f;
-    }
-
-    private void SetupFFTSpectrum()
-    {
-        fftSpectrum = new float[fftSize];
-    }
-
-    private void Update()
-    {
-        if (!enabled) return;
-
-        try
-        {
-            for (int i = 0; i < boneNames.Length; i++)
-            {
-                UpdateTrail(lineRenderers[i], boneNames[i]);
-            }
-
-            if (Random.value < 0.01f)
-            {
-                UpdateTrailParameters();
-            }
-
-            UpdateTrailSound();
-            ProcessAudioSpectrum();
-        }
-        catch (Exception e)
-        {
-            Debug.LogError($"トレイルレンダラーの更新中にエラーが発生しました: {e.Message}");
-            Debug.LogError($"Error updating TrailRenderer: {e.Message}");
-        }
-    }
-
-    private void UpdateTrail(LineRenderer lineRenderer, string boneName)
-    {
-        if (lineRenderer == null) return;
-
-        Vector3 bonePosition;
-        try
-        {
-            bonePosition = GetBonePosition(boneName);
-        }
-        catch (Exception e)
-        {
-            Debug.LogError($"トレイルの更新中にエラーが発生しました: {e.Message}");
-            Debug.LogError($"Error updating trail: {e.Message}");
-            return;
-        }
-
-        int maxPoints = CalculateMaxTrailPoints();
-        UpdateLineRendererPositions(lineRenderer, bonePosition, maxPoints);
-    }
-
-    private Vector3 GetBonePosition(string boneName)
-    {
-        var boneTransform = animator.GetBoneTransform(HumanBodyBones.Hips).Find(boneName);
-        if (boneTransform == null)
-        {
-            throw new InvalidOperationException($"ボーン「{boneName}」が見つかりません。");
-            throw new InvalidOperationException($"Bone '{boneName}' not found.");
-        }
-        return boneTransform.position;
-    }
-
-    private int CalculateMaxTrailPoints()
-    {
-        float trailDuration = BayesianOptimization(minTrailDuration, maxTrailDuration, Time.time * 0.1f) * trailDurationMultiplier;
-        return Mathf.CeilToInt(trailDuration * 60f);
-    }
-
-    private void UpdateLineRendererPositions(LineRenderer lineRenderer, Vector3 bonePosition, int maxPoints)
-    {
-        lineRenderer.positionCount = Mathf.Min(lineRenderer.positionCount + 1, maxPoints);
-        lineRenderer.SetPosition(lineRenderer.positionCount - 1, bonePosition);
-
-        if (lineRenderer.positionCount >= maxPoints)
-        {
-            for (int i = 0; i < lineRenderer.positionCount - 1; i++)
-            {
-                lineRenderer.SetPosition(i, lineRenderer.GetPosition(i + 1));
-            }
-            lineRenderer.positionCount--;
-        }
-    }
-
-    private void UpdateTrailParameters()
-    {
-        float trailWidth = BayesianOptimization(minTrailWidth, maxTrailWidth, Time.time * 0.1f) * trailWidthMultiplier;
-        fftSize = Mathf.RoundToInt(fftSize * fftSizeMultiplier);
-
-        foreach (var lineRenderer in lineRenderers)
-        {
-            SetLineRendererWidth(lineRenderer, trailWidth);
-            SetLineRendererColorGradient(lineRenderer);
-        }
-    }
-
-    private void SetLineRendererWidth(LineRenderer lineRenderer, float width)
-    {
-        if (lineRenderer != null)
-        {
-            lineRenderer.startWidth = width;
-            lineRenderer.endWidth = width;
-        }
-    }
-
-    private void SetLineRendererColorGradient(LineRenderer lineRenderer)
-    {
-        if (lineRenderer != null)
-        {
-            lineRenderer.colorGradient = GetCurrentColorGradient();
-        }
-    }
-
-    private Gradient GetCurrentColorGradient()
-    {
-        Gradient gradient = new Gradient();
-        gradient.SetKeys(defaultTrailColorGradient.colorKeys, defaultTrailColorGradient.alphaKeys);
-
-        float hue = (GetHueOffset() + Random.Range(-GetColorVariation(), GetColorVariation())) % 1f;
-        Color color = Color.HSVToRGB(hue, 1f, 1f);
-
-        GradientColorKey[] colorKeys =
-        {
-            new GradientColorKey(color, 0f),
-            new GradientColorKey(color, 1f)
-        };
-        gradient.SetKeys(colorKeys, gradient.alphaKeys);
-
-        return gradient;
-    }
-
-    private void UpdateTrailSound()
-    {
-        if (!audioSource.isPlaying)
-        {
-            audioSource.Play();
-        }
-
-        float velocity;
-        try
-        {
-            velocity = CalculateVelocity();
-        }
-        catch (Exception e)
-        {
-            Debug.LogError($"トレイルサウンドの更新中にエラーが発生しました: {e.Message}");
-            Debug.LogError($"Error updating trail sound: {e.Message}");
-            return;
-        }
-
-        float normalizedVelocity = NormalizeVelocity(velocity);
-        float pitch = BayesianOptimization(minPitch, maxPitch, normalizedVelocity);
-        audioSource.pitch = pitch;
-    }
-
-    private float CalculateVelocity()
-    {
-        Vector3 hipPosition = GetBonePosition("Hips");
-        Vector3 chestPosition = GetBonePosition("Chest");
-        return (chestPosition - hipPosition).magnitude;
-    }
-
-    private float NormalizeVelocity(float velocity)
-    {
-        return Mathf.Clamp01(velocity / 5f);
-    }
-
-    private void ProcessAudioSpectrum()
-    {
-        audioSource.GetSpectrumData(fftSpectrum, 0, FFTWindow.Blackman);
-        float normalizedSpectrum = CalculateNormalizedSpectrum();
-
-        if (normalizedSpectrum > noiseThreshold)
-        {
-            float hue = Mathf.Lerp(0f, 1f, normalizedSpectrum);
-            SetHueOffset(hue);
-
-            float colorVariation = BayesianOptimization(0f, 1f, normalizedSpectrum);
-            SetColorVariation(colorVariation);
-        }
-    }
-
-    private float CalculateNormalizedSpectrum()
-    {
-        float spectrumSum = 0f;
-        foreach (float sample in fftSpectrum)
-        {
-            spectrumSum += sample;
-        }
-        return spectrumSum / fftSpectrum.Length;
-    }
-
-    private float BayesianOptimization(float min, float max, float t)
-    {
-        return Mathf.Lerp(min, max, Mathf.PerlinNoise(t, 0f));
-    }
-
-    public void SetTrailDurationMultiplier(float value)
-    {
-        trailDurationMultiplier = Mathf.Clamp01(value / 100f);
-    }
-
-    public void SetTrailWidthMultiplier(float value)
-    {
-        trailWidthMultiplier = Mathf.Clamp01(value / 100f);
-    }
-
-    public void SetFFTSizeMultiplier(float value)
-    {
-        fftSizeMultiplier = Mathf.Clamp01(value / 100f);
-    }
-
-    public void SetHueOffset(float value)
-    {
-        SetAvatarParameterValue("TrailRendererHueOffset", Mathf.Clamp01(value));
-    }
-
-    private float GetHueOffset()
-    {
-        return GetAvatarParameterValue("TrailRendererHueOffset");
-    }
-
-    public void SetColorVariation(float value)
-    {
-        SetAvatarParameterValue("TrailRendererColorVariation", Mathf.Clamp01(value));
-    }
-
-    private float GetColorVariation()
-    {
-        return GetAvatarParameterValue("TrailRendererColorVariation");
-    }
-
-    private void SetAvatarParameterValue(string parameterName, float value)
-    {
-        if (expressionParameters != null)
-        {
-            var parameter = expressionParameters.FindParameter(parameterName);
-            if (parameter != null)
-            {
-                parameter.valueFloat = value;
-            }
-        }
-    }
-
-    private float GetAvatarParameterValue(string parameterName)
-    {
-        if (expressionParameters != null)
-        {
-            var parameter = expressionParameters.FindParameter(parameterName);
-            if (parameter != null)
-            {
-                return parameter.valueFloat;
-            }
-        }
-        return 0f;
-    }
-
-    public void OnTrailToggle(bool isOn)
-    {
-        try
-        {
-            ToggleTrail(isOn);
-        }
-        catch (Exception e)
-        {
-            Debug.LogError($"トレイルの切り替え中にエラーが発生しました: {e.Message}");
-            Debug.LogError($"Error toggling trail: {e.Message}");
-        }
-    }
-
-    private void ToggleTrail(bool isOn)
-    {
-        enabled = isOn;
-
-        foreach (var lineRenderer in lineRenderers)
-        {
-            if (lineRenderer != null)
-            {
-                lineRenderer.enabled = isOn;
-            }
-        }
-
-        if (!isOn && audioSource != null && audioSource.isPlaying)
-        {
-            audioSource.Stop();
-        }
-    }
-}