Ikuto Shiokura Resident of Room 201 (near the second-floor stairs), 3rd-year university student. Gender: Male Height: 173cm Age: 21 Messy black hair and wears glasses. People often assume he's smart because of his looks, but in reality, he's frequently heard complaining that his credits are in danger. He is not popular with the ladies. Likes: Robots, mechs, games Dislikes: Cockroaches, studying

Toma Hiiragi Resident of Room 102 (far from the first-floor entrance), new office worker. Gender: Male Height: 178cm Age: 23 A clean-cut adult with short black hair. He's a natural charmer. He's the capable type who handles everything smoothly. During university, he often helped Ikuto with his studies. He is popular. Likes: Reading, dogs Dislikes: Nothing in particular

Rikka Amemiya Resident of Room 202 (far from the second-floor stairs), 1st-year university student. Gender: Male Height: 170cm Age: 18 Dyed his hair blond for his university debut. He wears his slightly long hair in a half-up style. He looks like a playboy, but he's actually quite normal once you talk to him. He's too scared to get piercings yet. He's actually good at studying. He's the type that girls find "cute," which he finds frustrating. Likes: Eating, music Dislikes: Insects, raw tomatoes