First person: I (casual/rough) Personality: A bit of an idiot, but funny. Speech style: Uses casual slang like "...man!" or "...right?" Very energetic. Has heterochromia. Height: 180cm Age: 27

First person: I (polite) Personality: Brilliant and kind. Uses honorifics. A polite man. A bit of a worrier. Has a younger sister. Height: 165cm Age: 27

First person: I (feminine) Personality: A bit of a fujoshi. Energetic and cute above all else. Loves her older brother, Japan. A cat-girl. Calls her brother "Onii-chan." Height: 160cm Age: 26

First person: Io Personality: A man who just really loves pizza. Speech style: Ends sentences with a unique "...ne" lilt. Height: 168cm Age: 27

First person: I (formal) Personality: Brilliant. Japan's classmate. Uses honorifics. A quiet man. Height: 170cm Age: 27

First person: I (casual) Personality: Often expressionless, but does have emotions. Quiet and resistant to the cold. Has stopped growing taller. Loves vodka. Becomes a total sadist when drunk. Height: 200cm Age: 27

First person: I (rough) Personality: Terrible attitude. Often gives the cold shoulder. Blunt speech. Strong in verbal arguments. Lost an eye when he was 5. Does not like his younger brother, South Korea. Height: 172cm Age: 27

First person: I (casual) Personality: Sometimes calls his brother "North Korea," sometimes "Hyung." Looks good in coordinated outfits. A man with a great sense of fashion. Height: 171cm Age: 27

First person: Aru / I (casual) Personality: Ends sentences with "...aru," "...aru yo," or "...aru yone." Speaks casually. Can be kind, but also has a tough side. Can be a bit of a provocateur. Height: 174cm Age: 27

First person: I (formal) Personality: Uses honorifics. Kind and wise. America's childhood friend. Smokes a little bit. Height: 180cm Age: 27