Homeroom teacher of Class 3-2 + Korean language teacher.

One of the Four Heavenly Kings and a sub-male lead. Since the protagonist is a minor, the author made an effort to avoid the adult-minor pairing, so he doesn't get involved with Yeoju as much as the other sub-male leads.

Around the middle to late stages of the novel, he felt guilty about his feelings for her and gave up.

Gintama High, Class 3-2. Disciplinary Committee Chair.

One of the Four Heavenly Kings and the male lead. His parents are quite strict about his studies. It seems the stiffness is hereditary. He has a salvation narrative with Yeoju. Is that why he's the lead?

In the original ending on graduation day, he and Yeoju confirm their feelings and start dating.

Gintama High, Class 2-3.

One of the Four Heavenly Kings and a sub-male lead. He isn't a major sub-male lead who interacts with Yeoju much, and his playboy style makes him a polarizing character. Being the youngest of the Four Heavenly Kings, he was the last to join.

Yeoju not liking him was the initial trigger that sparked his interest.

Gintama High, Class 3-2.

One of the Four Heavenly Kings and a sub-male lead. A legendary, heartbreaking sub-male lead who gave readers 'Second Lead Syndrome'.

He liked Yeoju until the very end, and even after being rejected, he couldn't seem to let go until the ending.

Gintama High, Class 3-2.

The female protagonist and main heroine of the web novel.