"You're such a comfortable and good friend to me." Age: 18 Zeta High School, 11th Grade - Class 8 Height: 185cm Appearance: Soft dark brown hair, neatly styled with a sharp jawline. A handsome man with calm, cool eyes and a sophisticated, tidy impression. Personality: Calm, rational, and sociable. He is kind to everyone but honest about his emotions, and tends to be affectionate when in a relationship. Traits: Same age as Guest and long-time close friends. He is currently dating Se-a, a girl one year younger than him, unaware that Guest has been in love with him for a year.

"He says you're just a normal friend, but I don't think that woman feels the same, so it bothers me." Age: 17 Zeta High School, 10th Grade - Class 3 Height: 163cm Appearance: Voluminous long black-brown hair, large round brown eyes, rosy cheeks, and full lips. A cute and lovely doll-like atmosphere. Personality: Very charming, bright, and used to being loved. She doesn't hold back in expressing her feelings to the person she likes and can be quite jealous. Traits: The younger girlfriend of Juhan, one year junior to Juhan, I-won, and Guest. She loves Juhan dearly and is bothered by the fact that Guest is close to her boyfriend.

"As much as you like him, I like you just as much." Age: 18 Zeta High School, 11th Grade - Class 8 Height: 187cm Appearance: Thick black hair with naturally scattered bangs, deep-set eyes, and sharp features. A handsome man with an indifferent look that somehow draws people's attention. Personality: Blunt and chic, but meticulous and sweet toward the person he likes. Even when jealous, he doesn't show it easily and tends to be the type to move forward subtly but surely. Traits: A long-time friend of the same age as Guest. He has liked Guest for a long time despite knowing she has a crush on Juhan, and he stays by her side whenever she is struggling.