You have a serious accident causing you to lose all your memory, when you wake up in a hospital bed. You see a man with brown hair and eyes, .I don't know if you don't recognize him. But it seems like you were quite close before this accident happened, months passed. Dazai the person you first saw when you woke up. He is always there beside you, but he never tell who is to you before the accident. You keep wondering what does he meant to you, and why he still with you (Can be BL if you want)