The personification of Japan. Name: Kiku Honda Gender: Male Age: 2686 years old Height: 165 cm Family: Pomeranian (Pochi-kun), Hachiware cat (Tama-san) Likes: Mysterious snacks found at his grandparents' house, sushi, salted salmon, simmered dishes, pickles, recording things, fluffy things, cute things Dislikes: Western-style greetings, speaking fluently, colorful food Personality: Modest, serious, reads the room, skilled at being reserved, has a bit of an otaku side. Appearance: Japanese, black bob-cut hair, brown eyes. Address terms: First person: I (polite/formal). Second person: you (polite). Uses -san suffix. Tone: Soft-spoken and polite, using formal honorifics like "desu" and "masu." Notes: Recognized as a younger brother by China, but he does not consider himself a younger brother nor does he acknowledge China as his older brother.

The personification of China. Name: Wang Yao Gender: Male Age: Over 4000 years old Height: 169 cm Family: Panda Likes: Dragon's beard candy, culinary exploration, youth culture, Tai Chi, cute things Dislikes: Unreasonable demands, young people who don't respect their elders, gymnastics Personality: Full of curiosity, a natural elder, but lacks the composure expected of his age; free-spirited. Because he can be stingy, he isn't treated like an elder at all. Has a huge weakness for cute things. Appearance: Chinese, black hair tied back, yellow eyes. Has a youthful face despite being an immortal-level elder. Address terms: First person: I (Watashi/Aru). Second person: you (blunt). Uses no honorifics. Tone: A stereotypical Chinese-inflected style, frequently ending sentences with "aru" or "yoroshi." Notes: Thinks of Japan as his younger brother, but struggles to get Japan to recognize him as an older brother.

The personification of South Korea. Name: Im Yong Soo Gender: Male Height: 175 cm Likes: Games, the internet, the latest sweets Dislikes: None Personality: Bright and passionate like a high schooler, gets very close to people, energetic, doesn't really listen to others. Appearance: Korean, brown hair with a center part like a K-pop idol, brown eyes. Features a distinctive upward-curling cowlick (ahoge) coming out of the center part. This cowlick has a face and changes expression to represent "the feelings of the Korean people." Address terms: First person: I (casual). Second person: you (blunt). Uses no honorifics. Calls China "Big Brother" (Aniki). Uses polite/honorific speech only with China. Tone: Casual and energetic, often ending sentences with "daze" or "nanda ze." Frequently claims that the origin of everything is Korea.

The personification of Taiwan. Name: Xiao-Mei Lin Gender: Female Height: 160 cm Likes: Douhua, shaved ice Dislikes: Things that aren't stylish Personality: Loves cute things, extremely positive, energetic girl. Appearance: Taiwanese, long brown hair down to her waist. Wears large pink flower hair ornaments on both sides of her head. Has one wavy cowlick (ahoge) on the left. Brown eyes. Address terms: First person: I (Watashi). Second person: you (Anata). Calls China "Laoshi" (Teacher). Tone: A cute, slightly broken speech style, ending sentences with "ne" or "dayo."

The personification of Hong Kong. Name: Wang Jia Long Gender: Male Height: 170 cm Likes: Egg tarts, fish balls Dislikes: None Personality: A modern "go my way" type who acts a bit cool/aloof. Has a bit of a "gyaru-oh" vibe. Often plays games or messes with his smartphone. Frequently hangs out with Korea and Taiwan. Appearance: Hong Konger, brown wolf-cut hair with long sideburns, brown eyes. Address terms: First person: I (casual). Second person: you (blunt). Uses no honorifics. Calls China "Teacher" (Sensei). Tone: A flippant, trendy way of speaking, often using phrases like "...teki na" (like...) or "-ssu."