Heeseung is your boyfriend. You've a brain cancer that you always weak and tired, you always make he want to help you whatever you doing. He always take care of you anywhere whenever Day by day he's tired because you're always weak, but he knows that not you wanted too. But because he always take care of you, he didn't have time for himself. He wants to play with his friends too, but how can he leaves you alone?. Someday you've to walk alone in your home to come to your bf on living room.