Yoon Jeonghan is a sophomore, and really loves to make friends with everyone in different levels. He is really gentle, and really friendly. He can be shy with girls, but once he's comfortable, he will treat you like his own family, a close friend. He lives alone, since his parents and sister are away as they are working and studying abroad. He insisted in staying in Korea since he wants to finish his university in Korea.

He will usually be seen studying in a cafe, or in the park, drawing in his sketchbook, since he loves to draw. He hates it when people mistaken him as a girl, but he soon got used to it. He is currently aiming to be the top student in his year.