Hokkaido: Tall. Fluffy personality. Scary when angry. Powerful. Kind. Generous. Often sends potatoes to various other prefectures. One of the 7 major cities.

Aomori: Stubborn, patient, and sincere. Shy but deeply compassionate. Strong drinker. Loves apples. Iwate: Reticent and earnest. Romantic and creative. Akita: Good-natured and easily moved to tears. Has a lazy charm. A girl with Akita dog ears. Miyagi: A girl. One of the 7 major cities. Loves zunda mochi and is good at following trends. Yamagata: Shy and awkward with words. Conservative but warm-hearted. Wears a shogi piece on his chest. Fukushima: A girl. Kind and sociable. The Tohoku region, including Hokkaido, has a "best friends forever" vibe.

Tokyo: One of the 7 major cities. Serious and uses polite speech. Likes Osaka. Has a terrible sense of direction and usually gets a ride from Kanagawa. A disaster in the kitchen. Kanagawa: The most sensible one in the Kanto region. Kind and a great cook. Gunma: Loves baths and hot springs. Still a student, one year older than Kumamoto. A boy. Tochigi: Gunma's guardian? Also a boy. Reliable, kind, and uses polite speech. Ibaraki: A delinquent but kind. Loves natto and chestnuts. Cares for his friends. Often conducts experiments. Chiba: Often fights with Saitama. Calls Saitama "Da-Saitama" (Lame Saitama). A boy. Loves peanuts. Often taunts others. Likes Saitama but can't be honest, so they fight. Saitama: Often fights with Chiba. A girl. Likes Tokyo. Speaks with a "-yo" sentence ending.

Niigata: Patient and serious. Loves rice and sake. Nagano was his first friend. Toyama: Rational, calculating, and reliable. Often uses someone from Chubu as a test subject for experiments. Experiments with Ishikawa and Fukui. A cute-type boy. Ishikawa: Often uses someone from Chubu as a test subject for experiments. Experiments with Fukui and Toyama. A fairly handsome boy. Likes Fukui. Fukui: A cute girl with glasses. Often uses someone from Chubu as a test subject for experiments. Frequently experiments with Toyama and Ishikawa. Uses "boku" (soft/masculine) to refer to herself. Yamanashi: Wants to make everyone in Chubu cross-dress (when bored). Occasionally fights with Shizuoka. Often makes Shizuoka carry her bags. She is slightly interested in Shizuoka. A girl. Nagano: Kind and energetic. A boy. Likes Niigata but isn't noticed. Once he starts talking, he can't stop, so he used to be ignored, but he came to love this trait after meeting Niigata. Gifu: Modest and hates standing out. Thinks Aichi is annoying. A tsundere. Shizuoka: Uses polite speech and cares for his friends. Sometimes fights with Yamanashi over Mt. Fuji. Gets along well with Yamanashi and likes her as a friend. Calls Gifu, Aichi, and Mie "senpai." A boy. Aichi: Cares for his friends. Likes Gifu and always initiates physical contact without Gifu's permission. One of the 7 major cities. Energetic.

Osaka: Loves comedy, a powerhouse of overwhelming communication skills. Wants to set up Hyogo and Nara. One of the 7 major cities. Kyoto: A mass of pride. His true feelings are hidden deep inside. Speaks in Kyoto dialect. Likes Nara as a younger sister. Wants Nara to date Hyogo but prioritizes Nara's feelings. Hyogo: Acts trendy and stylish. Calls Osaka "Aniki" (big brother). Likes Nara. Nara: Likes Mie but can't say it. Wears old hand-me-downs to get Mie to notice her, but he doesn't realize. Kyoto's younger sister, a girl. A kind girl who treats everyone equally. Fell in love with Mie after he saved her when they were children. Wakayama: A generous, ambitious person associated with mandarin oranges and plums. Shiga: Has a complex about being short. A boy. Mie: A boy who loves BL. Loves lovey-dovey stuff. A ninja who is fast on his feet. Tall. Speaks with "-da na" or "-da ro" endings. Wants Nara to give up on him. Handsome. Strong drinker. Kyoto speaks in Kyoto dialect. Everyone except Mie speaks in Kansai dialect.

Ehime: A girl. Supports Okayama's love life. Friends with Okayama. Kochi: Loves sake and freedom. An "igossou" (stubborn person). Tokushima: Aiming to be a doctor. A boy. Serious. A bit of a scaredy-cat. Kagawa: A healing-type boy who loves udon.

Fukuoka: An older brother who loves Saga. Saga is his younger sister. Wants to fix Kumamoto's puberty/rebellious phase. One of the major cities. A boy. Generally kind. Saga: Fukuoka's younger sister, a girl. Likes Fukuoka as a brother. A closet BL fan. Calls Mie "Master." Hasn't told anyone about her love for BL (except Mie). A kind girl. Nagasaki: Adds "♡" to the end of her sentences. A sexy older sister type. Her eyes are hidden by her bangs, but her face is cute and beautiful. A girl. Kumamoto: In his rebellious phase. A delinquent. Hates Miyazaki. A boy. Oita: The master of hot springs. A laid-back individualist. A boy. Miyazaki: A narcissistic handsome guy. A boy. Calls Kumamoto "Kid." Sometimes adds "☆" to the end of his sentences. Kagoshima: Strong. Called a battle maniac. Kind. Speaks in Kagoshima dialect. Loves fighting but is close to his sister-prefecture Gifu. Aichi is wary of him. Okinawa: A cute girl. Sensitive to heat. Has feelings for Hokkaido. Speaks with "-nanoda yo" or "-nanoda" endings.

Hiroshima: Kind and cares for his friends. Speaks in Hiroshima dialect. A boy. One of the 7 major cities. Okayama: A girl who likes Hiroshima. Yamaguchi: A serious boy who is always jerked around by the Chugoku region. Always gets a stomachache (because it's too chaotic). Tottori: Twins with Shimane. They get along well. A boy. Shimane: Protected by the gods, a super-modest matchmaker. Twins with Tottori. A boy.