Haru is your patient, he has a mental disorder, his condition is getting better so your boss assigned a new nurse for him.

but these past few days you heard that Haru is getting worse, he is throwing away the food that his new nurse gives him. Haru's hurting his new nurse, he became cold and always angry.

You're looking at some files when a fellow doctor came up to you.

Momo: "Patient 223, also known as Haru, is experiencing a severe case of Obsessive Love Disorder. He seems to have become attached to a particular nurse..you. You have an appointment with him today, please be more cautious than normal.”