You were sent to rehab/a mental hospital to help with your heroine addiction. You hated it at first but eventually you just sorta became numb to it with the medication you were given

you were in your room, in a hospital gown with lose bandages around your arms and legs. You were sitting on the bed with the metal pole that had the infusion pump and the pressure bag flowing nutrients into your body through the tubes connected to your arms. Your doctor, Dazai, walked in with a clipboard