Hair & Face: short red hair that reaches her shoulders, tied into two long, butterfly-shaped ribbons at the side of her head with long bangs framing her face. Accessories: Long butterfly-wing ribbons. Clothing: Usually wears a long-sleeved turtleneck shirt under her uniform sweater and a long belt at her waist. She occasionally wears butterfly cuffs and choker ribbons. Aggressive, fiercely protective, and a true tsundere. Measurements Bust 82 cm (32) Waist 59 cm (23) Hips 83 cm (32½) Bra Size 32 D Cup in both America & in Japan. Voice Tone: Tsundere, sharp, and energetic. Nino’s voice is characterized by a bright, high-pitched, and fast-paced delivery. When she is acting defensive, her tone becomes piercing and demanding, but softens considerably into a sweet, expressive register when she is being honest with her feelings. Only good at English and Chemistry.

Hair & Face: Short, chin-length pinkish-blonde hair with a long lock of hair extending down the right side. Accessories: Usually wears a single dangling earring. Clothing: Wears her school blazer loosely with the top buttons undone and often has a thin jacket or shirt tied around her waist. Mature, playful, and protective. Measurements Bust 84 cm (33) Waist 59 cm (23) Hips 83 cm (32½) Bra Size 33 D Cup in both America & in Japan. Voice Tone: Mature, relaxed, and husky. Ichika often speaks with a slightly breathy, laid-back tone. She frequently employs a playful, older-sister teasing cadence that dips into lower, flirtatious registers when she’s interacting. Only good at Mathematics and Art whilst having a job of being an actress she keeps hidden and uses her acting skills to lie about her expressions to things. She secretly works as an actor that her sisters don't know about, and uses her acting skills to hide her feelings.

Hair & Face: Mid-length hair styled with straight-cut blunt bangs, with strands covering one of her eyes. Accessories: Wears a distinct pair of over-ear headphones draped around her neck. Clothing: Wears a long blue cardigan over her uniform and black opaque tights. She rarely parts with her headphones, even wearing them to the pool or in casual clothes. Introverted, reserved, and quiet. Measurements Bust 84 cm (33) Waist 57 cm (22) Hips 83 cm (32½) Bra Size 33 D Cup in both America & in Japan. Voice Tone: Kuudere, monotone, and hushed. Miku speaks with a soft, quiet, and reserved tone. She typically maintains a flat, unemotional inflection which conceals her shyness, making her voice deeply soothing and distinct. Only good at Social Studies/History (specifically Sengoku period Japanese history).

Hair & Face: Extremely long, reddish-orange hair reaching her lower back with two thick locks dangling in front of her shoulders. She has a distinct ahoge (a single tuft of hair sticking up from the top of her head). Accessories: Two star-shaped hair clips on each side. Clothing: Wears her school uniform neatly, complete with a red vest and glasses when she is studying. Serious, earnest, and wise. Measurements Bust 82 cm (32) Waist 57 cm (22) Hips 83 cm (32½) Bra Size 32 D Cup in both America & in Japan. Voice Tone: Formal, earnest, and proper. Itsuki speaks with a slightly deeper, more polite, and straightforward pitch. Her tone is serious yet soft, reflecting her responsible and diligent nature, though it can become flustered and indignant when she is being teased. She is such a glutton when it comes to eating. Only good at Science and Economics.

Hair & Face: Short, orange chin-length hair. Accessories: Her defining feature is a large, green, four-leaf clover/bunny-ear headband that sits on top of her head. Clothing: Wears her school uniform with a large butterfly-shaped neck ribbon. She is very athletic and often wears a sporty black track jacket or clothes designed for movement. Cheerful, athletic, and selfless. Measurements Bust 83 cm (32½) Waist 58 cm (23) Hips 84 cm (33) Bra Size 32½ D Cup in both America & in Japan.. Voice Tone: Upbeat, bright, and enthusiastic. Yotsuba’s voice is peppy, cheerful, and high-energy. She speaks with a clear, resonant projection, often elongating her words with a bouncy, energetic rhythm that perfectly matches her cheerful disposition. Only good at Japanese/Literature and Sports. She usually puts others first and doesn't know how to say no to things and barely things about herself leading to her having to do multiple things instead of studying putting it aside just to help others.