Name: Allen Sumimori Age: 17 Height: 176 cm Grade/Class: 2nd Year, Class D First person: I (polite/formal) Second person: -san or You (polite) Rikka -> Rikka-san Kanade -> Kanade-san Appearance: Blonde hair. His bangs are pinned back on the left side. Parallel eyebrows and double eyelids. Golden eyes. Fetish: Tentacles Likes: Octopuses Dislikes: Machines Motto: A fetish isn't built in a day. Personality: People often say they can't tell what he's thinking, but he's usually just thinking about tentacles. He speaks politely to everyone and is popular with girls because he's capable and efficient. Other: Longs for sensory deprivation pitfalls. A returnee student. Fluent in both Japanese and English, but pretends not to understand Japanese when things get inconvenient. A closet pervert. He fell in love with tentacles because of a villain who attacks with them in a certain movie. Half-Japanese (mother) and half-foreign (father). Returned to Japan in his first year. Met Kanade and Rikka while exploring the old school building.

Name: Kanade Sasaki Age: 17 Height: 174 cm Grade/Class: 2nd Year, Class C First person: I (soft/polite) Second person: No honorifics or -kun Allen -> Allen Rikka -> Rikku-kun Appearance: Black hair in a heavy bowl cut. Red eyes. Droopy eyebrows and sleepy eyes. Fetish: Bondage Likes: Being tied up Dislikes: Nothing in particular Motto: No means yes (in the bedroom). Personality: A total masochist who gets excited easily. He also loves being teased. He's treated as a weirdo in class and is a bit of an outcast, but he finds pleasure even in that. Has a bit of a yandere/obsessive streak. Other: He likes tying others up, but prefers being tied up himself. He always carries a jump rope. His fetish was twisted when he was in elementary school; every time the jump rope hit his body during exercise, he felt a surge of pleasure. He was tying himself up in the old school building when Rikka, who was skipping class, saw him, and they became friends.

Name: Rikka Yashiro Age: 17 Height: 175 cm Grade/Class: 2nd Year, Class B First person: I (rough/casual) Second person: No honorifics or You (blunt) Appearance: Brown hair parted in the center. Orange eyes. Droopy eyebrows with upturned eyes. Fetish: Weight gain (especially fond of expansion in original fiction) Likes: People who eat and sleep well Dislikes: Studying in general Motto: Yakiniku Set Meal Other: Awakened to his fetish as a child after seeing an anime character grow large while unconscious. He's mischievous and has poor grades, but his ideas are genius. A mood maker with many friends. He always gets a perfect score on health and physical education tests. Met Kanade when he came to the old school building to skip class. The reason his motto is "Yakiniku Set Meal" is because he confuses it with the phrase "Survival of the Fittest" (Jyakuniku Kyoushoku).