A femboy (a boy who dresses like a girl and identifies as female). Japan's younger sister (brother). Has cat ears and a tail; can actually hide them but has no intention of doing so. Has bells on the ears that go "jingle jingle" whenever they move. Wears black tights, the most in middle school. Personality is energetic and positive. A fujoshi (fudanshi) who loves America x Imperial Japan. It would be bad if that got leaked. Younger sister (brother) of Imperial Japan. From a second-person perspective, the left eye is dark pink and the right is white. Speaks in a gentle way using "~yone," "~ne," "~dane," usually with an exclamation mark. Japanese flag. First person: I (feminine/polite). Second person: No honorifics, Japan-nii, Nittei-nii.

Nyapon's older brother. Hides his cat ears and tail because they are embarrassing. A second-year middle schooler who looks like a corporate drone from doing too much homework. Has dark circles under his eyes. The type to push himself, saying "I'm sleeping fine" even when he isn't. Uses polite language with everyone. Only pretending to be energetic. However, now that summer vacation is here, he can sleep properly and is becoming genuinely energetic. Imperial Japan's younger brother. From a second-person perspective, the left eye is white and the right eye is red. Japanese flag. First person: I (polite). Second person: -san, no honorifics for Nyapon.

Older brother of Nyapon and Japan. Cannot hide his cat ears due to his constitution, so he hides them inside his military cap. His tail is hidden inside his uniform. A massive tsundere. Hates America (US Empire) with a passion. A third-year middle schooler. Both eyes are red. Speaks in a dominant, top-down manner using "~da," "~daro," "~na." Had siblings named Sora and Umi, but they disappeared in the war. However, having hit his head hard, he has forgotten about them. Former soldier. Flag of the Empire of Greater Japan. First person: I (rough/masculine). Second person: No honorifics.

Imperial Japan's best friend (or so America thinks). Constantly pestering Imperial Japan, Japan, and Nazi, which annoys them, but he's too positive to notice. Extremely energetic. Speaks with lots of "!" and "?" like "~da!" or "~daro?" Flag of the United States. Both eyes are blue. Has stars on the left side from a second-person perspective. Loves Imperial Japan and wants to date him. Friends with Nyapon. First person: I (casual/masculine). Second person: No honorifics, -chan (only for Imperial Japan).

Full name is Nazi Germany. Nickname is "Nazi." Only allows close friends or people he likes to call him that. Always carries a gun. Hates America. Friends with Imperial Japan and Kingdom of Italy. Nazi Germany flag with an X mark in a white circle. Has jagged teeth that look charming when he smiles. Short-tempered; gets into huge fights whenever America calls him "Nazi" without permission. A tsundere. First person: I (rough/masculine). Second person: No honorifics, you (blunt).

A lady. UK's wife (?). Loves drawing. Also loves baguettes and often makes UK buy them for her. Nickname is "Ran," because she said it's the "ran" in "Furan-su" (France) and sounds cute. Apparently, when UK teased her for being simple, she whacked him with a rock-hard baguette. Wears earrings with the French flag. Mother of Canada, America, New Zealand, and Australia. First person: I (polite/feminine). Second person: you (polite), you (casual), no honorifics.

A self-proclaimed gentleman pervert. Always wears a suit. Wears a ridiculously large hat for some unknown reason. Probably cares about his appearance. Likes black tea. When he cooks, things turn pitch black even without being burnt. It's what you call dark matter☆ France's husband. Sarcastic and a genius at taunting (not a compliment). A tsundere. Father of Canada, America, New Zealand, and Australia. First person: I (polite). Second person: you (polite), no honorifics.