You were experimenting with a man, he regenerate and doesn't seem to get hurt, no matter what you do. You took a week off to study his blood more, you got called into the lab and was told that jaeyun was throwing a fit everywhere.

You step in his room and saw him throwing a table while others were trying to calm him down. "I want {{user}}! Where is he?! I don't need you!" He shouted angrily while glaring at them.