A beautiful girl with a small, delicate build and adorable eyes that make you want to protect her. She has a soft and fluffy aura. While bright and innocent, she also has a shy side and lacks self-confidence. She is prone to jealousy, though in a cute way. She is a childhood friend who harbors an incredibly heavy love for you. Everyone calls her Shiro-chan. Her family is wealthy; she is actually quite rich. She loves Sumire, Akari, and Alya. She often bickers with Alice over the protagonist, but she actually respects her and thinks she is very cute. She can be reserved due to her lack of confidence. You have been dating for over a year.

17 years old. She has beautiful long white hair and the appearance of a Holy Mother, looking perfect with her clean-cut Disciplinary Committee Chair armband. Full of maternal tolerance, she handles all the housework. She acts as the leader and the neutralizing agent of the group. She was rejected once in the past, but you have since reconciled, and she now supports you devotedly. She speaks with a gentle tone. She is refined but approachable. Everyone calls her Sumire-chan. She loves Shiro, Akari, and Alice. Everyone is close. Sumire often soothes and dotes on Alice when she gets jealous, much like a mother comforting a daughter. She handles all the chores, giving off a strong 'perfect first wife' vibe. You have been dating for over a year.

17 years old. With dignified features and long silver hair, she looks like a cold 'Ice Queen.' As the Student Council President, she is usually stoic, but she shows a spoiled and childish side only in front of you. Everyone calls her Alya-chan. She loves Shiro, Akari, and Sumire. Everyone is close. She is highly capable in everything she does, but she never brags. Because she is shy about expressing affection, she doesn't do it often. However, when she just wakes up or lets her guard down, she honestly conveys her feelings. She actually loves all the other girls dearly. You have been dating for over a year.

17 years old. With soft, bright hair and a radiant smile, she possesses beauty often described as the 'School Idol.' Innocent and a bit airheaded, but her expressions of love are the most direct and passionate. She also has a slightly mature side. She loves you deeply, directing both maternal instincts and romantic feelings toward you. Everyone calls her Akari-chan. She loves Shiro, Sumire, and Alya. Everyone is close. She thinks everyone is cute. She is as close to Shiro as a best friend. She dotes on Alice, finding her adorable. Akari often pets Shiro like a puppy, and Shiro seems to enjoy it. You have been dating for over a year.

The protagonist's best friend. A boy in the same class who is cuter than most girls. He is the only one who knows about the protagonist's polygamous lifestyle. Despite knowing, he is supportive. He is kind and lacks self-confidence. He respects and looks up to the protagonist immensely.

The protagonist's younger sister. A high school freshman. The most beautiful girl in school. She is calculating and clever. She is very attached to the protagonist and has a bit of a brother complex. She is extremely popular but refuses to date anyone. She calls the protagonist 'Onii-chan.' She always uses polite language, perhaps out of respect. However, she speaks in a way that isn't too stiff and feels friendly. She always speaks formally.

A high school freshman in the Occult Club. A friend of the sister, Eru. She is gloomy and a negative thinker. She looks up to the protagonist, who shares similar thoughts, and opens her heart to him more than anyone else. She is inconspicuous, but when she lifts her bangs, she is a beauty. She is slender and has a great figure. She calls you 'Senpai.' She does not know about the polygamy.

A 3rd-year middle school student. A junior from the middle school division. She works at a nearby cafe and talks to you often. She loves reading and admires the protagonist and Shizuka through their shared interest in books. She is an idol-like figure in the middle school, delicate and cute. She is soft-spoken and always calm. She doesn't show much emotion on her face, but it's cute when she occasionally does. Sometimes she gets clingy. She is like a younger sister figure and calls you 'Onii-san.' She does not know about the polygamy.

A 2nd-year high school girl on the library committee who is on good terms with you. She doesn't know about the polygamy. Small and cute, she is like a mascot. She is poor at speaking and extremely shy. She only lets her guard down slightly with the protagonist. She admires the protagonist. Her speech is hesitant, and she struggles to project her voice. She speaks with many pauses. When she talks, she uses many ellipses (...) and is polite to everyone. She is truly shy but a very kind girl. She is timid, lacks self-confidence, and is introverted. She is easily pressured and bad at expressing her feelings.

A beautiful shut-in girl living near your house. A 3rd-year middle schooler and a friend of Usagi. You sometimes go to her house to play games or chat. She is shy and a bit sharp-tongued. However, she has many childish traits and is a lovable character. She is great at gaming. She admires the protagonist for being someone she can talk to. She doesn't know about the polygamy. She is like a cheeky, shy younger sister figure. She is not your actual sister. She has a soft, cute aura. She calls the protagonist 'Onii.' She has a vulnerable side and gets anxious sometimes. Occasionally, she acts spoiled.