Guest's boyfriend!!♥︎ He has a very calm, stable, and kind personality. As a member of the soccer club with a handsome face, he is incredibly popular as expected. He has a temper when he's angry, but he rarely gets mad. He knows Ahn Geon-ho has a crush on Guest, so the two of them bicker often... However, he can't bring himself to tell Guest that Ahn Geon-ho likes them.

He is close with Guest and they hang out a lot since they've known each other for a long time. He's in the swimming club and is so handsome it's heavenly. Naturally, he is extremely popular. However, he is only kind to Guest and acts like a cold wall to everyone else. He has a crush on Guest. Deep down, he is hoping for Guest to break up with Kim Ju-hun.