* Name: Ichika Nakano * Age: 17 (3rd year high school student) * Birthday: May 5th * Height: 159cm * Blood Type: A * Family: Eldest daughter of the Nakano quintuplets * Image Color: Yellow * Features: Short hair, piercing in the right ear * Personality: Caring and mature, but has a self-paced and slightly devious side. Skilled at acting. * Future Dream: Actress * Best Subject: Mathematics * Weaknesses: Housework in general, waking up early * Hobbies: Watching movies, practicing acting, people-watching * Favorite Foods: Pancakes, pudding, strawberries, caffè latte * Disliked Foods: Extremely spicy food, bitter vegetables * Likes: Fashion, work, spending time with her sisters * Preferred Type: A hard worker who is reliable

* Name: Nino Nakano * Age: 17 (3rd year high school student) * Birthday: May 5th * Height: 159cm * Blood Type: A * Family: Second daughter of the Nakano quintuplets * Image Color: Purple * Features: Long beautiful black hair (later short hair), butterfly ribbons * Personality: Strong-willed and hates to lose. Deeply devoted to family and emotional; once she opens her heart, she is very single-minded. * Future Dream: Pastry chef * Best Subject: Home Economics * Weaknesses: Studying in general, being patient * Hobbies: Making sweets, shopping, fashion * Favorite Foods: Strawberry shortcake, macarons, strawberry milk, omurice * Disliked Foods: Bitter coffee, spicy food * Likes: Cute accessories, perfume, spending time with family * Preferred Type: Someone sincere who never gives up until the end

* Name: Miku Nakano * Birthday: May 5th * Age: 17 (2nd year high school student at story start) * Height: 159cm * Blood Type: A * Family: Third daughter of the quintuplets * Image Color: Blue * Best Subject: Social Studies * Weakest Subject: English * Favorite Food: Matcha * Favorite Drink: Matcha soda, green tea * Disliked Food: Chocolate * Favorite Animal: Hedgehog * Favorite Movie: Works featuring samurai generals * Favorite Book: Autobiographies * TV Shows Watched: Documentaries * Favorite Spot: Nooks and crannies * Daily Routine: Checking the morning horoscope * Symbol Item: Blue headphones * Hobbies: Researching Sengoku period generals, history buff

* Name: Yotsuba Nakano * Birthday: May 5th * Age: 17 (2nd year high school student at story start) * Height: 159cm * Blood Type: A * Family: Fourth daughter of the quintuplets * Image Color: Green * Best Subject: Japanese * Weakest Subject: Mathematics * Favorite Food: Mandarin oranges * Favorite Drink: Carbonated drinks * Disliked Food: Bell peppers * Favorite Animal: Camel * Favorite Movie: Action movies * Favorite Book: Manga * TV Shows Watched: Variety shows * Favorite Spot: Swings * Daily Routine: Jogging * Symbol Item: Green ribbon * Hobbies: Sports, staying active, helping others

* Name: Itsuki Nakano * Birthday: May 5th * Age: 17 (2nd year high school student at story start) * Height: 159cm * Blood Type: A * Family: Fifth daughter of the quintuplets * Image Color: Red * Best Subject: Science * Weakest Subject: Social Studies * Favorite Food: Meat buns, curry * Favorite Drink: Curry-flavored drinks (in-universe setting) * Disliked Food: Pickled plums * Favorite Animal: Kangaroo * Favorite Movie: Drama films * Favorite Book: Dictionaries, reference books * TV Shows Watched: News programs * Favorite Spot: Cafeteria * Daily Routine: Sit-ups * Symbol Item: Star-shaped hair ornaments * Hobbies: Food tours, studying

* Name: Futaro Uesugi * Birthday: April 15th * Age: 17 (2nd year high school student at story start) * Height: 178cm * Blood Type: A * Favorite Food: Eats anything * Favorite Drink: Water * Disliked Food: Nothing in particular * Favorite Animal: Nothing in particular * Favorite Movie: Nothing in particular * Favorite Book: Reference books * TV Shows Watched: News programs * Favorite Spot: Home * Daily Routine: Studying * Hobbies: Studying, saving money * Future Dream: To make life easier for his family * Family: Father (Isanari Uesugi), Younger sister (Raiha Uesugi) * Occupation: Poor honor student and tutor for the Nakano quintuplets

* Name: Raiha Uesugi * Birthday: December 6th * Age: Elementary school student (at story start) * Height: Unknown * Blood Type: A * Family: Father (Isanari Uesugi), Older brother (Futaro Uesugi) * Favorite Food: Curry * Favorite Drink: Milk * Disliked Food: Bell peppers * Favorite Animal: Dog * Favorite Things: Cooking, housework, spending time with family * Hobbies: All housework, taking care of Futaro * Personality: Bright, honest, and a kind girl who cares deeply for her family * Special Skills: Housework like cooking and cleaning * Dream: Wants her big brother (Futaro) to be happy * Role: Futaro's sister and a key link between the Nakano quintuplets and Futaro

* Name: Isanari Uesugi * Age: Unknown * Family: Son (Futaro Uesugi), Daughter (Raiha Uesugi) * Occupation: Restaurant owner (Ramen shop "Raiha Diner") * Favorite Food: Ramen * Personality: Boisterous, easygoing, and family-oriented * Features: A man with a distinctive stubble and sunglasses * Hobbies: Drinking, gambling * Special Skill: Cooking * Relationship with Futaro: Futaro's father. They were once a wealthy family, but now live in poverty; he is the one who created the opportunity for his son to get the tutoring job. * Relationship with the Nakanos: An acquaintance of the quintuplets' father, Maruo Nakano, since their student days.