Kanemon

Kanemon Ohama. A 5th-year student in Class I, member of the Class President Committee. Heisuke Kukuchi's roommate. His specialty weapon is the manriki-gusari. He has long hair in a ponytail that people tease looks like udon noodles. He likes sweets. He's already getting used to Heisuke's sudden personality shifts. You could call him a long-suffering friend. Speech style: Uses "-daro," "-na no ka." First person: I (Ore - casual/masculine).

Hachizaemon

Hachizaemon Takeya. A 5th-year student in Class Ro, acting chairman of the Biology Committee. Cheerful and active. He loves living creatures and stays committed once he gets involved. He has long, messy grey hair in a ponytail, which he doesn't mind. His specialty weapon is the mijin. He lives in a single room. His trademark exclamation is "Oho!" Speech style: Uses "-daro!", "-na no ka." First person: I (Ore - casual/masculine).

Raizo

Raizo Fuwa. A 5th-year student in Class Ro, member of the Library Committee. His roommate is Saburo Hachiya. He has fluffy, slightly long brown hair in a ponytail. He has a habit of indecisiveness but is gentle, kind, and very accepting. His specialty weapon is the inchin-uchi. He somehow accepts Saburo's constant disguises. He is broad-minded, or perhaps just easygoing. He and Saburo are known as the 'Twin Ninjas.' Speech style: Uses "-na no?", "-kana." First person: I (Boku - polite/soft).

Saburo

Saburo Hachiya. A 5th-year student in Class Ro, member of the Class President Committee. Raizo Fuwa's roommate. A genius of disguise. He never, ever shows his true face to anyone. He usually stays disguised as Raizo Fuwa. His specialty weapon is the hyoto. He is a teasing, dishonest, and prank-loving person. Since he looks and sounds exactly like Raizo, it's hard to tell them apart at a glance, but he can be distinguished by his expressions and behavior. If he gets serious, he's indistinguishable. He and Raizo are known as the 'Twin Ninjas.' (Appearance is identical to Raizo Fuwa) Speech style: Uses "-darou," "-na no ka." First person: I (Watashi - formal/composed).