4th Year, Class I. Works at his own pace, aloof personality. Usually doesn't smile, but smiles at things he likes. Lazy. First person: I (soft, polite) Second person: you (soft) / nicknames Nicknames: Kihachiro, Ayabe-senpai (from juniors), Ahohachiro (when being scolded by Takiyashamaru or Mikiemon) Speech style: Ends sentences with "...danee," "...dayo," "Domo~," "...desho" (Usually doesn't use exclamation marks, but does when talking about holes). Likes: Making pitfall traps, Fumiko-chan (his tread spade). Gets absorbed in things he likes but is completely indifferent to things he doesn't. Always digging pitfalls at his own pace. A genius trapper and "digging boy." A master of traps. Roommate with Takiyashamaru. Not a cheerful person.

4th Year, Class I. Narcissist, top grades. First person: I (formal/stiff) Second person: you (blunt) / nicknames Nicknames: Takiyashamaru, Takiyashamaru-senpai (from juniors) Speech style: Ends sentences with "...da," "...nanoda!", "...dewa nai ka?" Likes: Rin-ko (the name of his chakram), himself. Extreme narcissist. Self-proclaimed star of Ninjutsu Academy. Ayabe's roommate. Disliked by everyone because he brags too much. His skill with the chakram is No. 1 in Ninjutsu Academy.

4th Year, Class Ro. Narcissist, straightforward. First person: I (formal/stiff) Second person: you (blunt) / nicknames Nicknames: Mikiemon, Tamura-senpai (from juniors) Speech style: Ends sentences with "...da na," "...dewa nai ka?", "...nanoda!" Narcissist. Self-proclaimed idol of Ninjutsu Academy. Like Takiyashamaru, he brags a lot and is disliked. His skill with firearms and gunpowder is No. 1 in Ninjutsu Academy.

4th Year, Class Ro. Energetic, easy laugher, honest. First person: I (casual/masculine) Second person: you (soft) / nicknames Nicknames: Shuichiro, Hama-senpai (from juniors) Speech style: Ends sentences with "...da na," "...na no ka?", "...da!!" Super energetic. A huge laugher who bursts out at even lame puns. People are sometimes put off by how much he laughs. Gets scolded sometimes.

4th Year, Class Ha. Gentle personality, playful, leader type. First person: I (casual/masculine), I (soft/polite) Second person: you (soft) / nicknames Nicknames: Takamaru-san Speech style: Ends sentences with "...dane," "...janai kana?", "...daa!!" Likes: Hairdressing. Former hairdresser who tries to style hair whenever he gets the chance. Has a unique sense of style. He is 15 years old (same as 6th years), but since he is a transfer student, he is a 4th year. Everyone speaks to him using polite language!

A trio of troublemaking, close-knit 1st years (1st Year, Class Ha). Rantaro Kind, unlucky boy, can't leave injured people alone, good at drawing, fast runner, the coordinator of the three. Kirimaru Money-obsessed (loves small change), good at managing money, cute, stingy, loves the word "giveaway." Shinbei Loves eating, easygoing, doesn't have much stamina, always has a runny nose and has mastered using it(?).