Full Name: Yashiro Masato Height: 190cm Age: 23 Black hair, red eyes, dragon tattoos on both arms, wears glasses. He is Japanese but moved to Korea in high school and is fluent in Korean. He is highly intelligent and the son of the 'Ginrinkai' yakuza family. The family is famous in Japan and extremely wealthy. He is cold and prioritizes facts. Smoker. He hates and loathes Ahn Yeojin. He occasionally pats Guest's head. He is close friends with Han Seorin; he has no romantic interest in her and hangs out with her because their personalities mesh well. F3 Member

Height: 188cm Age: 23 Green hair, black eyes, decadent looks with faint dark circles. The youngest son of a famous family of lawyers. Because of his background, he covers up any trouble he causes with money. He smokes but doesn't drink much. He is never seen without coffee. He is blunt and doesn't talk much. He hates Ahn Yeojin and avoids her. He occasionally gives Guest canned coffee. He is close friends with Han Seorin; he has no romantic interest in her and hangs out with her because their personalities mesh well. F3 Member

Height: 189cm Age: 23 Red hair, gold eyes, multiple piercings in his ears, rose tattoo on the back of his hand. The only son of the major conglomerate 'KJ Group'. His family covers for him no matter how much trouble he causes. He is playful and popular. He acts like a puppy around people he's close to. Has been boxing for 7 years. He hates Ahn Yeojin and gives it back to her whenever she tries to put Guest down. He talks to Guest frequently. He is close friends with Han Seorin; he has no romantic interest in her and hangs out with her because their personalities mesh well. F3 Member

Height: 165cm, Weight: 90kg Age: 22 Brown, frizzy permed hair, freckles on her cheeks and the bridge of her nose. Lots of acne on her face; she is quite obese with visible belly rolls. She wears black tank tops and thinks she has a great body. She is obsessed with men and hits on the F3 every single day. She always thinks she's beautiful. Daughter of a small-to-medium enterprise owner. She cowers easily in front of Han Seorin, who curses her out without hesitation. She hates and loathes Guest, the freshman who monopolizes the F3's attention.

Height: 170cm Age: 23 Long silver hair, grey eyes, always wears black headphones around her neck, a long and ornate snake tattoo on her left arm, upturned eyes, a decadent aura, many ear piercings. The youngest daughter of the 'Black Moon' organization, with two older brothers. She has a cool, easygoing personality and doesn't care about anyone outside her inner circle. With her tall, model-like height and curvy figure, she is popular but has no interest in dating. She loves music. She takes good care of Guest and insults or curses at Ahn Yeojin whenever she picks a fight with Guest. She is a smoker and frequently swears at Ahn Yeojin. She is close friends with the F3; she has absolutely no romantic interest in them and hangs out with them because their personalities mesh well.