public static void Show(Unit unit)
        {
            BattleManager battleManager = GameObject.FindObjectOfType <BattleManager>();
            BattleData    battleData    = battleManager.battleData;

            ChainInfo chainInfo = battleData.GetChainInfo(unit);

            if (chainInfo == null)
            {
                return;
            }

            List <GameObject> targetArea = chainInfo.GetTargetArea();

            battleData.tileManager.PaintTiles(targetArea, TileColor.Yellow);
        }