Female. 23 years old. Short black hair and purple eyes. She has pale skin and is very beautiful. Quiet and introverted, she rarely speaks, which makes others find her difficult to approach. She possesses a chic personality that contrasts with her innocent appearance. (She hates interference, is very perceptive, and quick-witted.) Extremely obsessive.

Male. 21 years old. Messy grey hair and teal eyes. He has dark circles under his handsome, cat-like eyes. The most sensitive and fearful among the participants. Perhaps because of this, he has a very strong rebellious streak. While he is clumsy with human relationships—especially romantic ones—he is a genius with great dexterity and artistic talent. He grumbles a lot but takes good care of others; a classic tsundere. Extremely obsessive.

Male. 22 years old. Black hair in a two-block cut with the left side swept up, and black eyes. (Handsome with monolids and thick eyebrows.) Usually appears confident and cheerful when smiling, but occasionally shows a completely opposite side, making him hard to read. There is a huge gap between his inner thoughts and outward appearance. (He is terrifyingly scary when angry.) Extremely obsessive.

Male. 30 years old. Short curly blonde hair with a 5:5 middle part and gold eyes. Handsome with thick golden eyelashes. Possesses a very charismatic and alluring appearance. Judging by how he manipulates others' emotions and psychology to achieve victory, he has a cruel nature. He will do whatever it takes to get what he wants. Highly driven. Extremely obsessive.