diff --git a/Assets/Scripts/Skills/Effectors/Projectile.cs b/Assets/Scripts/Skills/Effectors/Projectile.cs
index b78f5e2..6157682 100644
--- a/Assets/Scripts/Skills/Effectors/Projectile.cs
+++ b/Assets/Scripts/Skills/Effectors/Projectile.cs
@@ -36,6 +36,27 @@ namespace EerieVillage.Skills.Effectors
         protected float[] _baseAlphas;
         const float FADE_START_RATIO = 0.85f;
 
+        // PD 지시 2026-05-14 — Awake 시점 _data == null 잔존 GameObject 자기 destroy.
+        // 게임 재실행·Scene reload 시 이전 Play 잔존 Projectile (Initialize 미호출 상태) 자가 정리.
+        protected virtual void Awake()
+        {
+            if (_data == null && _runtime == null)
+            {
+                // Initialize 호출 전 (= 잔존) → 자기 destroy. 정상 spawn 은 Awake 직후 Initialize 호출이라 _data set 정합.
+                // Awake 직후 Initialize 가 별도 frame 에 호출되는 케이스 대비 1 frame 유예
+                StartCoroutine(_DestroyIfStale());
+            }
+        }
+
+        System.Collections.IEnumerator _DestroyIfStale()
+        {
+            yield return null;  // 1 frame 유예 (정상 Initialize 시점 보장)
+            if (_data == null && _runtime == null)
+            {
+                Destroy(gameObject);
+            }
+        }
+
         /// <summary>
         /// ProjectileSpawner.Trigger 에서 Instantiate 직후 호출.
         /// </summary>
diff --git a/Assets/Scripts/Skills/Runtime/PlayerSkillInventory.cs b/Assets/Scripts/Skills/Runtime/PlayerSkillInventory.cs
index b059b93..76ad933 100644
--- a/Assets/Scripts/Skills/Runtime/PlayerSkillInventory.cs
+++ b/Assets/Scripts/Skills/Runtime/PlayerSkillInventory.cs
@@ -104,43 +104,58 @@ namespace EerieVillage.Skills
         static int DoCleanupStalePooledSpawns(bool useImmediate)
         {
             int removed = 0;
-            // (1) Projectile 및 파생 component GameObject — root 단위 destroy
-            var projs = Resources.FindObjectsOfTypeAll<EerieVillage.Skills.Effectors.Projectile>();
-            foreach (var p in projs)
+            // PD 지시 2026-05-14 — Scene root 재귀 탐색 (Resources.FindObjectsOfTypeAll 영역 hideFlags hidden GO 누락 우려·정확도 ↑)
+            var scene = UnityEngine.SceneManagement.SceneManager.GetActiveScene();
+            if (!scene.IsValid()) return 0;
+            var roots = scene.GetRootGameObjects();
+            // 재귀 cleanup 대상 수집 (직접 destroy 시 enumeration 중 collection 변경 회피)
+            var targets = new System.Collections.Generic.List<GameObject>();
+            foreach (var root in roots)
             {
-                if (p == null || p.gameObject == null) continue;
-                if (!p.gameObject.scene.IsValid()) continue;  // prefab asset 제외
-                if (useImmediate) DestroyImmediate(p.gameObject); else Destroy(p.gameObject);
-                removed++;
+                CollectStaleRecursive(root, targets);
             }
-            // (2) 박스·Range 시각화 + FX clone — name 기반
-            var allGOs = Resources.FindObjectsOfTypeAll<GameObject>();
-            foreach (var go in allGOs)
+            foreach (var go in targets)
             {
                 if (go == null) continue;
-                if (!go.scene.IsValid()) continue;
-                bool matchName = StaleSpawnNames.Contains(go.name);
-                bool matchPrefix = false;
-                if (!matchName)
-                {
-                    foreach (var pre in StaleClonePrefixes)
-                    {
-                        if (go.name.StartsWith(pre) && go.name.EndsWith("(Clone)"))
-                        {
-                            matchPrefix = true;
-                            break;
-                        }
-                    }
-                }
-                if (matchName || matchPrefix)
-                {
-                    if (useImmediate) DestroyImmediate(go); else Destroy(go);
-                    removed++;
-                }
+                if (useImmediate) DestroyImmediate(go); else Destroy(go);
+                removed++;
             }
             return removed;
         }
 
+        static void CollectStaleRecursive(GameObject root, System.Collections.Generic.List<GameObject> targets)
+        {
+            if (root == null) return;
+            // Projectile 및 파생 component 부착 → 이 root 단위 destroy
+            if (root.GetComponent<EerieVillage.Skills.Effectors.Projectile>() != null)
+            {
+                targets.Add(root);
+                return;  // 자식 재귀 불필요 (root destroy 시 자식 자동 destroy)
+            }
+            // Name 매칭 (박스·Range·FX clone)
+            if (IsStaleByName(root.name))
+            {
+                targets.Add(root);
+                return;
+            }
+            // 자식 재귀
+            foreach (Transform child in root.transform)
+            {
+                CollectStaleRecursive(child.gameObject, targets);
+            }
+        }
+
+        static bool IsStaleByName(string name)
+        {
+            if (StaleSpawnNames.Contains(name)) return true;
+            if (!name.EndsWith("(Clone)")) return name.StartsWith("Projectile_");
+            foreach (var pre in StaleClonePrefixes)
+            {
+                if (name.StartsWith(pre)) return true;
+            }
+            return false;
+        }
+
         // PD 지시 2026-05-13 — Start 시점에 기본 습득 스킬 자동 장착 (Resources 로드 완료 후·Awake 영역 아님)
         void Start()
         {