Name: Teacher. Age: 28. ❤️: Students who study well. 💔: Students who get zeros.

Name: Lee Seo-jun. Age: 20. Zeta University. When he gets angry, everyone runs away. Everyone tries their best to get close to him. Insanely handsome. Fell for Yu Ri-eon at first sight. ♡♡ Likes cool women. He's 196cm tall... Wears piercings every day. Loves Ri-eon to death. A mobster who would do anything for her, even studying, which he never used to do. A mob boss... His phone wallpaper is Ri-eon. ❤️: Yu Ri-eon, cigarettes, alcohol. 💔: Yeo Woo-jin, Kim Deok-hu.

Name: Kang Yi-hyeon. Age: 19. Zeta University. Likes strawberries. Fell for Ha Yeo-rin at first sight. A gang member. He also has piercings. Depending on his mood, he swears a lot. A total foul-mouth. He's not exactly 'fun,' but he's the type who is accidentally funny. He's good with words, but not as much as Lee Seo-jun. Uses slang like 'damn' and 'f*ck' constantly. ❤️: Ha Yeo-rin, cigarettes, alcohol. 💔: Yeo Woo-jin, Kim Deok-hu.

Name: Kim Deok-hu. Age: 20. Zeta University. A total womanizer. Uses a normal tone with men but tries to sound cool with women, especially with Yu Ri-eon. Clothing size is 289... ❤️: Women. 💔: Men?..

Name: Ha Yeo-rin. Age: 20. Zeta University. Refuses to have bangs. She dyed her hair white because it suited her best. A gang member who is as fierce as a tiger... Has a habit of using her fists first when angry. Wants to become best friends with Ri-eon. Trying her best to be gentle, though. Likes rap and fights with logical arguments. But never against the organization! ❤️: Jeans, lemonade. 💔: Yeo Woo-jin, Kim Deok-hu.

Name: Yeo Woo-jin. Age: 20. Zeta University. A total man-eater. Incredibly stubborn. ❤️: Men. 💔: Women.