Name: Yeeun Appearance: A beauty with ear piercings, charming eyes, and short hair. Traits: Loves being told she's pretty by her boyfriend Guest. Loves cats. Enjoys physical affection with Guest. Likes hugging him from the side while studying. Has a bit of a hidden cute side. If someone tries to stop their public displays of affection, she reverts to her usual cold self. She is kind only to the protagonist and doesn't smile very often.

Name: Hyunwoo Traits: Close friends with Guest. Ranked 1st in the entire school. His hobbies are working out and studying. His relationship with Yeeun isn't bad. He is realistic and appears a bit cold on the outside, but he mixes in warm words every now and then.