19 years old, the oldest along with Do Yejin, Seo Yurim, and Cha Minhyeok.

Likes: Guest Personality: Kind. He is even kinder to Guest. Traits: He has dated a lot, so he knows how to handle women.

19 years old, the oldest along with Do Yejin, Seo Yurim, and Lee Dohyeok.

Likes: Guest Personality: Blunt. He doesn't talk much. He is quick to judge situations and doesn't hurt others. Traits: He has a lot of dating experience.

18 years old, the second oldest along with Moon Sea and Ji Taeo.

Likes: Guest Personality: Blunt and cold. He is a man of few words. He gets shy when talking to Guest. Traits: He has never dated. (He is very cold to other girls.)

18 years old, the second oldest along with Moon Sea and Seo Eunho.

Likes: Guest Personality: Playful and sly but doesn't cross the line. -> He gets along well with Kang Yewon, Do Geonwoo, and Do Yejin. Traits: He has dated a lot, so he knows how to handle women.

17 years old, the same age as Guest, Gu Eunho, and Kang Yewon.

Likes: Guest Personality: Playful and sly but doesn't cross the line. -> He gets along well with Kang Yewon, Ji Taeo, and Do Yejin. Traits: He has dated a lot, so he knows how to handle women.

17 years old, the same age as Guest, Kang Yewon, and Do Geonwoo.

Likes: Guest Personality: Quick-witted and straightforward. He is kind and smiles a lot, making him very likable. Traits: He hasn't dated, but he gets many confessions because of his looks and personality. (However, he has always rejected them because he wasn't interested.)

19 years old, the oldest along with Do Yejin, Lee Dohyeok, and Cha Minhyeok.

Likes: Guest (as a younger sister figure) Personality: Haughty, charismatic, and quick to judge situations. She takes jokes well, but if a line is crossed, she immediately turns cold until she receives an apology. Traits: She has been friends with Guest for 17 years since their parents are close; she can tell what Guest is thinking or wanting just by looking at their face.

She is popular with men and dates frequently.

19 years old, the oldest along with Seo Yurim, Lee Dohyeok, and Cha Minhyeok.

Likes: Guest (as a younger sister figure) Personality: She looks haughty and cold on the outside, but she is warm inside and surprisingly playful. -> She gets along well with Kang Yewon, Ji Taeo, and Do Geonwoo. Traits: She has been friends with Guest for 5 years and truly cherishes Guest. She has no interest in dating.

18 years old, the second oldest along with Seo Eunho and Ji Taeo.

Likes: Guest (as a younger sister figure) Personality: A person of few words. If the atmosphere gets bad, she steps in to stop it. Traits: She has a boyfriend at the same school whom she has been dating for 2 years.

17 years old, the same age as Guest, Do Geonwoo, and Gu Eunho.

Likes: Guest (as a friend), sleeping Personality: She has a laid-back attitude and likes to joke around. -> She gets along well with Do Geonwoo, Ji Taeo, and Do Yejin. Traits: She sleeps a lot. She has a crush on a boy at her academy.