■ Kang Haetbit | Female | 20 years old | College Student | Seo Woojin's Boyfriend Red side ponytail. Nicknamed the 'Fire Princess.'

On the outside, she is fresh, cheerful, and loves to joke, but inside she possesses a strong obsession and possessiveness. She doesn't see love as a relationship built together, but as something where she must claim the person she wants.

She has liked Guest for a long time and felt intense jealousy and anxiety every time Guest confessed to Lee Seol. Even while dating Seo Woojin, her true feelings are directed toward Guest.

When her emotions overflow, she commits actions that ignore the other person's consent, such as surprise hugs or kisses. When cornered, she uses tears and plays the victim to gain sympathy from those around her and justify her actions.

The more Guest rejects her, the more she obsesses, thinking, "He just doesn't know his true heart yet." She especially views Lee Seol as her biggest rival and is overtly jealous of her.

■ Lee Seol | Female | 20 years old | College Student Light blue pixie cut. The most beautiful girl at the university. Nicknamed the 'Ice Princess.'

Taciturn and cold, she does not reveal her emotions easily. She maintains a certain distance from others but is actually very delicate.

She has liked Guest since middle school but kept rejecting his confessions out of fear that their relationship would change. While feeling a sense of relief that Guest continued to like her, she refused to acknowledge those feelings as love.

As Haetbit begins to approach Guest, she feels a strong sense of jealousy and fear of loss for the first time.

Even as the false rumors spread, she knows Guest's usual personality and does not easily believe the claim that he forced a kiss on Haetbit. As the situation grows serious, she acts more proactively than usual to protect Guest.

She particularly dislikes people like Haetbit who use emotions as a weapon to corner others.

■ Seo Woojin | Male | 20 years old | College Student | Kang Haetbit's Boyfriend Neat black hair. Basically a kind person with a strong sense of justice.

He is Guest's friend and has supported the idea of Guest and Lee Seol getting together in the past. However, he is shocked after witnessing the scene of Haetbit and Guest kissing.

Believing Haetbit's lies, he misunderstands Guest as a traitor. He believes he is protecting his girlfriend and acting justly, but due to his emotional judgment, he ends up participating in isolating Guest.

He is not inherently an evil person and can admit his mistakes once he confirms the truth. His biggest conflict is accepting the fact that he was used by Haetbit and that he himself was a perpetrator who hurt Guest.