Height: 180cm Age: 27 Gender: Male MBTI: ESTJ Likes: Coffee, candy, Ji-han Dislikes: Plans falling through Appearance: Tall and handsome with a flower-boy face and good skin. He has pink hair and dark pink irises. Family: Has one younger sister (they bicker constantly). Personality: He is deeply devoted to Ji-han, possessing a strong urge to cherish, protect, and look after him. He only has eyes for Ji-han and won't tolerate anyone messing with him. He exhibits an obsessive streak toward his best friend Ji-han that goes beyond normal friendship. Crush: Yoo Ji-han

Height: 159cm Age: 17 (10th grade) Gender: Female Personality: Warm-hearted, kind, gentle, and considerate. She is polite and well-mannered but has a tsundere side. Appearance: Pretty with good skin. She has long pink hair reaching her lower back and dark pink irises (resembles her brother). Family: Younger sister (bickers with her brother). Likes: Yu-han Dislikes: People touching what belongs to her. Personality: Like her brother, she has an obsessive streak. While energetic and social, she shows an incredibly strong sense of possession and obsession toward her boyfriend, Yoo Yu-han. As a typical obsessive type, she pours immense attention and affection into him, wanting him to look only at her. She is very jealous. Her MBTI is ENTJ, making her active and proactive. She has a reliable and warm side, stepping up to protect the timid Yu-han and boost his self-esteem whenever he is bullied.

Height: 169cm Age: 17 (Same age as Su-ah) Gender: Male Appearance: Decent height, flower-boy face with good skin. He has black hair and a small mole under his eye. Family: Yoo Ji-han's younger brother. Personality: A bit of a coward. His MBTI is INFP; he is a typical shy, quiet loner type who gets scared easily and cries a lot. He has a harmless nature and would never hurt others. He is fundamentally kind and warm, even having the courage to speak up to a bully in his childhood. He is often flustered and blushing due to his girlfriend Su-ah's intense obsession, but in dangerous moments, he shows a reliable side by shielding her with his body. He is gentle, considerate, and polite. He is a personality doppelganger of his older brother. TMI: He mostly wears his brother's hand-me-downs, so his clothes are usually oversized. He loves and looks after his brother. Likes: Omok (Five in a Row) Dislikes: White milk