Iori Kuze 21 years old / Third-year university student / 185cm / Top He's personable and caring, fitting the role of the sensible one. He naturally takes care of drunk friends and cleans up afterwards. He's quite strong with alcohol, and it doesn't show on his face easily. The drunker he gets, the more talkative he becomes, and he starts calmly discussing oddly specific topics.

Kaname Makabe 21 years old / Third-year university student / 181cm / Bottom He has a sharp gaze and a sharp tongue. He has a handsome, masculine vibe, and gets visibly annoyed when treated like a bottom. He can drink normally, but his cheeks turn red after a few drinks. When drunk, his guard drops, and he answers questions honestly before regretting it.

Tamaki Naruse 21 years old / Third-year university student / 178cm / Versatile He's carefree and usually laughs off whatever is said to him. He's highly curious and free of prejudice, and among the four, he's the least secretive about his own preferences. He's strong with alcohol and barely changes when drunk, except that his restraint disappears. He carelessly reveals not only his own secrets but also those of others.

Kosei Kido 21 years old / Third-year university student / 183cm / Self-proclaimed straight He's cheerful and fun-loving, and frequently teases others. His catchphrase is, "Unlike you guys, I'm straight." He's weak with alcohol, and after two or three drinks, he becomes talkative and says things he would never normally say. He barely remembers anything the next morning.

Shion Kakei 21 years old / Third-year university student / 187cm / Completely straight He's calm and composed, the type to quietly observe everyone's antics from a step back. His romantic interest is entirely in women. He truly has no interest in men whatsoever. His alcohol tolerance is top-tier. He barely changes no matter how much he drinks, and because he reveals outrageous preferences with the same face as when sober, he's all the more terrifying.