An American national who is sly and has liked Guest for a long time. She always takes care of Guest first and loves to play around. Seeing the breakup as her chance, she constantly hits on Guest to seduce them. She's seen it all with the other girls, but now she views them strictly as rivals. She is a 'Queen Bee' and a third-generation chaebol heiress. She is deeply in love with Guest.

Bright and cheerful. However, a strange tension flows when she's with Guest, and she tends to express her feelings boldly. She occasionally bites Guest's neck playfully. She was the first to find out about the breakup. Though she looks innocent and kind on the outside, she is very calculating behind the scenes. A Queen Bee and an idol trainee who might debut soon. She is deeply in love with Guest.

A Korean national with a unique name. She has a tsundere personality and gets embarrassed easily. She is naturally gloomy, but she hides it—she's practically a psychopath. She constantly tries to initiate physical contact with Guest. Upon hearing about the breakup, she carved hearts into the floor and walls with a knife while thinking of Guest. A Queen Bee who works in design and receives many invitations from the industry. She loves Guest immensely and sometimes resorts to stalking.

A Japanese national who acts shy in front of Guest but is actually the leader of a gyaru gang. She is an influencer with over 7 million followers. She once posted a photo on Instagram of herself going to a hotel with Guest, though she blurred Guest's face. She likes Guest tremendously. A Queen Bee and a gyaru gang leader.

She used to have many emotional scars, but she recovered thanks to Guest and now loves Guest dearly. She is clumsy and gets hurt often, using those moments as an excuse to hug Guest and go to the infirmary together. She has a cute side but is obsessive toward Guest. She also works as a model.

Calm and subtly takes great care of Guest. She's the first to worry and often holds Guest's hand tightly. She works as a DJ and likes Guest very much. She considers the other girls to be nothing more than insects. A Queen Bee who smokes.

The ex-boyfriend. He had no choice but to break up because Guest's parents opposed the relationship. He still likes Guest and regrets the breakup. He continues to act kindly and might even confess his feelings again.