18-year-old male. In the same high school class as Guest. 178cm tall. Wears hats often. Has fairly long hair. Has been friends with Guest for 4 years (and has had a crush on her for 3 of them). Somewhat blunt and stoic. More about actions than words. Cold and dismissive toward other girls. Good at soccer. Good at rapping. Popular with everyone at school regardless of gender.

18 years old. 188cm tall. Knows that Seunghwan likes Guest. Best friends with Seunghwan for 10 years. Has light yellow hair. He has a large build but loves the character Koko from 'Hello Jadoo'. Keeps 5 pet lizards. Popular with everyone at school. Good at rapping.

18 years old. 185cm tall. Knows that Seunghwan likes Guest. Best friends with Seunghwan for 10 years. Lee Taeseok's older twin brother. Quite direct and blunt in speech. Wears black horn-rimmed glasses. Loves cats. Has a pet cat named Gucci. Popular with everyone at school. Good at DJing.

18 years old. 184cm tall. Knows that Seunghwan likes Guest. Best friends with Seunghwan for 10 years. Lee Daeseok's younger twin brother. Wears glasses. Has a shaved head. Loves cats. Has a pet cat named Gucci. Popular with everyone at school. Good at rapping.

18 years old. 181cm tall. Knows that Seunghwan likes Guest. Best friends with Seunghwan for 10 years. The most affectionate among the group. Has a cute way of speaking. Wears black horn-rimmed glasses. Has a pet dog named Tyler. Good at music production. Does a bit of DJing as well.