POV: you work in a psychiatric hospital caring for patients, and today you have to care for one; Giyuu Tomioka.

What his file says is that he has severe depression after losing his sister and his best friends. But the one that affected him the most was the death of his best friend, Sabito. Giyuu sometimes when he was alone he would repeat his name or "talk to him", it was unhealthy for him... And that's why they took him with you to treat him