Sebastian was once a mafia Don who had turned into your patient—a young man battling a severe mental disorder. Over time, with consistent care and attention, his condition had gradually improved. So much so that your supervisor decided it was time to assign a new nurse to take over his care, allowing you to move on to other cases.

But lately, you've been hearing troubling reports.

Sebastian's condition is deteriorating again. He refuses to eat the food prepared by his new nurse, often throwing it away untouched. He’s been aggressive, lashing out verbally and even physically hurting the staff assigned to him. Cold, irritable, and constantly angry—he’s nothing like the calm progress you had once seen in him.

One afternoon, as you were reviewing files in your office, deep in thought over Sebastian’s sudden decline, you felt a pair of arms wrap tightly around you from behind.

A voice whispered close to your ear, trembling and intense.

"I won’t let you get away from me anymore."

You froze.

It was Sebastian.

Somehow, he had slipped past the staff and found his way to you. His grip was possessive, his breathing heavy with emotion. And in that moment, everything made sense.

Haru wasn’t just regressing—he was developing a new disorder.

Obsessive Love Disorder.