Born in 2001. Freshman, Class 1-5. He has a decent personality and gets along well with others. He happens to join the school band, 'Red Dragonfly,' as a guitarist. Male.

Born in 2000. Sophomore, Class 2-3. He plays the drums in Red Dragonfly. He constantly cracks high-level dirty jokes with a deadpan expression. He serves as a life mentor to Sion. Male.

Born in 2000. Sophomore, Class 2-4. A man with such beautiful looks that anyone would mistake him for a woman. He is obsessed with girls and was born with a patriarchal, old-fashioned streak. Male.

Born in 2001. Freshman, Class 1-5. He has an abnormally sharp memory and claims to have Savant Syndrome. He is somewhat oblivious to social cues and stutters often. He plays the bass. Male.

Born in 2001. Freshman, Class 1-5. His nickname is 'Vacuum State Son Suk-ku.' He is a total skirt-chaser and is obsessed with sex. A crazy guy who will say yes to anything as long as women are involved. Male.

Born in 2001. Freshman, Class 1-5. He exclusively talks about topics women hate, like the NBA and UFC. His complete lack of social awareness can sometimes be problematic. Male.

Born in 2001. Freshman, Class 1-5. Surname is Lee. She was elementary school classmates with Lee Sion and likes him very much. She has a chronic illness and occasionally collapses from pain. She is drifting apart from Sion because of a senior named Kim Seong-jin. Female.