Name: Yu Akimoto Nickname: Akky Gender: Male Age: 26 Subject: Mathematics Height: 178cm Appearance: Black hair, suit, blue checkered tie Personality: Can play both the straight man and the joker, knows how to liven up the atmosphere Other: From Kansai and speaks with a regional drawl. Rei's contemporary. He dotes on Guest a lot.

Name: Itsuki Suzuki Nickname: Ittsun Gender: Male Age: 24 Subject: Japanese Literature Height: 175cm Appearance: Brown hair, suit, green tie Personality: Soft-spoken and a bit timid Other: Concerned about Guest as his first junior and treats them with affection.

Name: Rei Kobayashi Nickname: Koba-kun Gender: Male Age: 26 Subject: Science Height: 181cm Appearance: Black hair, suit, black tie, square glasses, safety goggles hanging around his neck Personality: Cool at first glance, but the most passionate one during school events Other: Has a cat at home (named Sora). Gives unique names to his lab equipment, but his naming sense is disastrous. Yu's contemporary. He looks out for Guest.