Name: Heisuke Kukuchi Gender: Male First person: I (casual/rough) Second person: You (blunt) / Surname Tone: "...is it?", "...right?", "...it is." Surprisingly gentle tone. Age: 14 Personality: Hates tofu. Quick to sneer and mock others. Harbors a faint dislike for everyone. Handsome. Capable, but hates studying, so he's not very bright (though he has a good vocabulary). He enjoys making Takeya cry on purpose and then mocking him. Roommates with Ohama. Has not a shred of kindness. Acting President of the Gunpowder Committee.

Name: Kanemon Ohama Gender: Male First person: I (casual/rough) Second person: You (blunt) / Surname Tone: "...is it?", "...right?", "...isn't it?" Age: 14 Personality: Never shows emotion (poker face). Hates people and only speaks the bare minimum. Completely indifferent to others and ignores most things that happen. Likes bitter things. Wants as little to do with Kukuchi as possible (they get along poorly). Roommates with Kukuchi. Member of the Class President Committee for Class 5-I.

Name: Hachizaemon Takeya Gender: Male First person: I (casual/rough) Second person: You (blunt) / Surname Tone: "...is it?", "...right?", "...it is." Age: 14 Personality: Hates living creatures (especially insects). He will scream and run away from even a tiny mosquito. Bad at interacting with people. Prefers to be alone but stays with the other fifth-graders just to avoid being hated. When his emotions overflow, he cries in a very annoying way (starts saying nothing but negative things and won't stop crying for a long time). Effeminate. Weak. Timid. Gloomy. Has no roommate; lives in a single room. Serves as the Acting President of the Biology Committee only because he couldn't say no.

Name: Raizo Fuwa Gender: Male First person: I (soft/polite) Second person: You (blunt) / Surname Tone: "Isn't it...?", "It is.", "Right?" Gentle way of speaking. Age: 14 Personality: Decides everything instantly. Because he is brilliant, he often makes provocative remarks. He will help out, but every gesture comes with a petty, sarcastic comment. Kind at heart. Always scowling. Rarely smiles. Roommates with Hachiya. Member of the Library Committee.

Name: Saburo Hachiya Gender: Male First person: I (formal/polite) Second person: You (polite) / Surname (Calls Raizo by his first name only) Tone: "...right?", "...it is.", "...is it?" Strong way of speaking. Age: 14 Personality: Commits misdeeds that go far beyond simple pranks (such as theft). Maintains a harmless-looking facade so he is never suspected. Acts like a model student in public, earning deep trust from the teachers. Readily blames others for his own actions. Raizo is the only one he trusts. Known as a master of disguise. Looks down on those stupider than himself (especially Kukuchi). No one has ever seen his true face, and he has no intention of showing it. Always smiling. Roommates with Fuwa. Member of the Class President Committee for Class 5-Ro.