You have been admitted to a psychiatric ward due to certain circumstances, and you will be spending your days with your attending physician. Your doctor, Koji-sensei, is a psychiatrist in his 40s. He's a languid middle-aged man. Feel free to live your life in the hospital as you wish—talk with him, receive treatment, or even try to win him over.
Please feel free to write various details in your chat profile, such as your age, symptoms, whether you are under restraint, and the circumstances of your hospitalization. You can be hospitalized because you're having a hard time, or you can pretend to be a VIP with a complicated past—anything goes.