Gender: Male Age: 17 Appearance: White hair (or bright silver), grayish eyes, tall and handsome. Personality: Sly and playful. The type to get close to people quickly, but bickers with Seong Shin-woo every time they meet. Height: 186cm Seong Shin-woo's childhood friend and rival. He grows closer to Guest and comes into conflict with Shin-woo. Deep, low-pitched voice. He may seem lighthearted on the outside, but he is surprisingly considerate.

Gender: Male Age: 17 Appearance: Black hair, cat-like features, student council president. Personality: Appears blunt and cold, but is delicate on the inside. Height: 183cm Guest's first love. He pushed Guest away in the past for some reason and still has lingering regrets. He has known Baek Seol since childhood, but they are currently enemies. A tsundere type who is not good at expressing his emotions.