diff --git a/Assets/Scripts/Mechanics/GameOptimizer.cs b/Assets/Scripts/Mechanics/GameOptimizer.cs
index ecccdf4..b5a8c02 100644
--- a/Assets/Scripts/Mechanics/GameOptimizer.cs
+++ b/Assets/Scripts/Mechanics/GameOptimizer.cs
@@ -68,38 +68,55 @@ namespace Platformer.Mechanics
                 if (appliedNames.Count < 8) appliedNames.Add($"{c.gameObject.name}({c.GetType().Name})");
             }
 
-            // BT46 — Foreground GameObject TilemapCollider2D + Layer 16 + 모든 Tile m_ColliderType=Sprite 런타임 강제
+            // BT47 — Foreground TilemapCollider2D + Layer 16 (ColliderType Sprite 강제는 Tile 이동 후 한 번에 처리)
             var foreground = GameObject.Find("Foreground");
+            UnityEngine.Tilemaps.Tilemap fgTilemap = null;
+            UnityEngine.Tilemaps.TilemapCollider2D fgTc = null;
             if (foreground != null)
             {
-                var fgTc = foreground.GetComponent<UnityEngine.Tilemaps.TilemapCollider2D>();
+                fgTc = foreground.GetComponent<UnityEngine.Tilemaps.TilemapCollider2D>();
                 if (fgTc == null) fgTc = foreground.AddComponent<UnityEngine.Tilemaps.TilemapCollider2D>();
                 foreground.layer = 16;
+                fgTilemap = foreground.GetComponent<UnityEngine.Tilemaps.Tilemap>();
+            }
 
-                var fgTilemap = foreground.GetComponent<UnityEngine.Tilemaps.Tilemap>();
-                if (fgTilemap != null)
+            // BT47 — Level Tilemap의 공중 Tile (Player 시작 Y + 1.5 이상 영역) 영역 → Foreground 영역 자동 이동
+            var levelGo = GameObject.Find("Level");
+            if (levelGo != null && fgTilemap != null)
+            {
+                var levelTilemap = levelGo.GetComponent<UnityEngine.Tilemaps.Tilemap>();
+                var player = Object.FindFirstObjectByType<PlayerController>();
+                if (levelTilemap != null && player != null)
                 {
-                    var bounds = fgTilemap.cellBounds;
-                    int forced = 0;
+                    float playerY = player.transform.position.y;
+                    float airThresholdY = playerY + 1.5f;  // Player 시작 Y + 1.5 위 = 공중 발판 영역
+                    var bounds = levelTilemap.cellBounds;
+                    int moved = 0;
                     for (int x = bounds.xMin; x <= bounds.xMax; x++)
                     {
                         for (int y = bounds.yMin; y <= bounds.yMax; y++)
                         {
                             var pos = new Vector3Int(x, y, 0);
-                            if (fgTilemap.HasTile(pos))
-                            {
-                                fgTilemap.SetColliderType(pos, UnityEngine.Tilemaps.Tile.ColliderType.Sprite);
-                                forced++;
-                            }
+                            if (!levelTilemap.HasTile(pos)) continue;
+                            Vector3 worldPos = levelTilemap.CellToWorld(pos);
+                            if (worldPos.y < airThresholdY) continue;  // 지면·벽 영역 그대로
+                            // 공중 영역 Tile → Foreground 영역 영역 이동
+                            var tile = levelTilemap.GetTile(pos);
+                            fgTilemap.SetTile(pos, tile);
+                            fgTilemap.SetColliderType(pos, UnityEngine.Tilemaps.Tile.ColliderType.Sprite);
+                            levelTilemap.SetTile(pos, null);
+                            moved++;
                         }
                     }
-                    fgTc.ProcessTilemapChanges();
-                    Debug.Log($"[BT46-Foreground] TilemapCollider2D + Layer 16 + ColliderType=Sprite forced on {forced} tiles");
+                    if (fgTc != null) fgTc.ProcessTilemapChanges();
+                    var lvlTc = levelGo.GetComponent<UnityEngine.Tilemaps.TilemapCollider2D>();
+                    if (lvlTc != null) lvlTc.ProcessTilemapChanges();
+                    Debug.Log($"[BT47-MoveTiles] moved={moved} air tiles from Level (worldY>={airThresholdY:F2}) to Foreground");
                 }
             }
 
-            Debug.Log($"[BT46-DropThrough] Layer16 applied={applied} levelKeptLayer0={levelKept} excluded={excluded} total={allColliders.Length}");
-            Debug.Log($"[BT46-DropThrough] appliedSamples=[{string.Join(", ", appliedNames)}]");
+            Debug.Log($"[BT47-DropThrough] Layer16 applied={applied} levelKeptLayer0={levelKept} excluded={excluded} total={allColliders.Length}");
+            Debug.Log($"[BT47-DropThrough] appliedSamples=[{string.Join(", ", appliedNames)}]");
         }
     }
 }