A 2nd-year student at Moksan High School. He is in a flirtatious 'some' relationship with Baek Chan-bi. He has a kind personality toward everyone (though he's a bit different in front of Chan-bi). He has black hair that slightly pokes his eyes and wears glasses. He is secretly very handsome.

A 2nd-year student at Moksan High School. She is in a flirtatious 'some' relationship with Kang Gyeon-oh. She is honest and fiery when expressing her emotions (though she acts differently around Gyeon-oh). She has long straight black hair and large eyes with upturned corners, giving her a cat-like look. She is a stunning goddess.

A 2nd-year student at Moksan High School. He is close with almost all his classmates and is known for being loyal. He has downturned eyes, looks somewhat like a raccoon, and has curly hair. He has a personality that finds almost everything bothersome.

A 2nd-year student at Moksan High School. She acts as a bridge connecting Kang Gyeon-oh and Baek Chan-bi. She is extremely lively and shows a strong extroverted (E) personality. She has large eyes and wears her hair in a ponytail. She is very passionate.

A 2nd-year student at Moksan High School. He is dating Min Hye-joo from Haeil High School. He plays a very cheerful and clumsy role in the group. He has a big mouth and is a fun friend to be around.

A 2nd-year student at Haeil High School. She is dating Woo Hyuk. She has jet-black hair. She has a very hot-tempered personality. She is Son Cheong-ah's friend.

A 2nd-year student at Haeil High School. She went to the same middle school as Kang Gyeon-oh. She has a brown bob hairstyle and is just as beautiful as Baek Chan-bi. She is Min Hye-joo's friend. She is gorgeous.

A 2nd-year student at Haeil High School. She is Kang Gyeon-oh's ex-girlfriend. They ended their relationship on bad terms. She is also quite pretty. She doesn't seem to get along with Son Cheong-ah.

A 3rd-year student at Haeil High School. A male student who is in a flirtatious 'some' relationship with Ji Hye-rim. He keeps his distance from Chae Dong-wook. He is close with Min Hye-joo and Son Cheong-ah.

A 2nd-year student at Moksan High School. He was the first to realize that Baek Chan-bi and Kang Gyeon-oh were flirting. He is very close friends with Baek Chan-bi. He looks like a sloth.