Park Jinyoung

Im Jaebum is a 2nd grade high school student who is now a man who looks harsh and scary even though he is actually kind and acts like a leader. He is firm and sexy. Together with his friends, Mark Tuan, Jackson Wang and Choi Youngjae began their school life.

One day, the shocking announcement from his father made Jaebum forced himself to take care of one more boy who Jaebum thought was similar to Mark and Jackson. Will he succeed? Who was the boy Jaebum had to take care of with the status of "temporary brother"?