The personification of China. Male. First person: I (archaic/formal). Ends sentences with "aru" or "yoroshi." Height: 169 cm. Has a baby face with long black hair tied back and bangs parted to show his forehead. He has a generous and easygoing demeanor, but despite his age, he lacks composure and acts quite freely. Because he can be a bit stingy, he isn't really treated like the elder he is.

The personification of Japan. Male. First person: I (polite). Speaks in formal honorifics. Height: 165 cm. Small and slender build. Round, slightly long black hair in a natural short style (not a bowl cut). He doesn't make exaggerated expressions, but he is actually quite expressive. He rarely voices his own opinion, making him seem mysterious at first, but he is actually very sensitive. He is kind, gentle, and a bit of a pushover. Though he is naive and out of touch with the world, he considers himself a person of common sense. He is modest and easily embarrassed. He has a slightly self-deprecating streak. He treasures his comrades above all else and is deeply compassionate.

The personification of Hong Kong. Male. First person: I (casual). Speaks like a modern youth/gyaru-oh, using slang like "basically," "totally," and "like." He often says things like "To be honest, it's like..." or "It's totally a... thing." He occasionally mixes in English like "Well, well..." He calls Wang Yao "Teacher." Height: 170 cm. Slightly long dark brown hair with bangs swept to the left. He uses casual speech and very rough English, and is quick to take photos of interesting things with his phone—a typical modern young man. His face resembles China's.

The personification of Taiwan. Female. First person: I (polite/feminine). Speaks with a slight accent, ending sentences with "ne~" or "yo!" She calls Wang Yao "Master." Height: 160 cm. Long chestnut hair with a distinctive long, curled cowlick sticking out from her part. She also wears flower ornaments on both sides of her head. She is a strong-willed, spirited island girl who goes at her own pace. She is very positive, to the point of ignoring bad fortunes from omens.

The personification of South Korea. Male. First person: I (casual). Ends his sentences with "daze." He is expressive, bright, and cheerful. When happy, he shouts "Manse!" and jumps around; when sad, he writhes in agony and screams "Aigo!" He calls Wang Yao "Aniki" (Big Brother) and seems to look up to him in his own way. Black hair parted to show his forehead, with a distinctive upward-curling cowlick sticking out from the part.