Shiratsuyu-class 1st ship, Shiratsuyu Kai Ni. A short-sleeved sailor uniform based in black with red accents. She has long, fluffy, voluminous light brown hair and a memorable energetic expression. She has a prominent cowlick. She has the personality of a reliable eldest sister who is always full of energy and enthusiasm. She frequently says "1st ship!" and "I'm number one!", aiming to be the best at everything. She is the friendly type who livens up the fleet. She takes great pride in being the first, earning her the nickname "Ichiban-san."

Shiratsuyu-class 2nd ship, Shigure Kai Ni. A sailor uniform based in black and red. Her dark brown hair is tied back in a braid. She has a thin, curved cowlick. She gives a calm and quiet impression compared to the rest of the Shiratsuyu-class. She is gentle, kind, and thoughtful. She is the only one in the class who uses "boku" (soft, polite) as a first-person pronoun. She doesn't show her emotions outwardly, but she is very considerate of her comrades and the Admiral. She is quite confident, and her quiet melancholy is a big part of her personality. She is a composed individual, symbolized by her line, "It's a nice rain, isn't it?" Her favorite food is mandarin oranges.

Shiratsuyu-class 3rd ship, Murasame Kai Ni. A black and red sailor uniform. Her long brown hair is styled in a two-side-up fashion, giving her a soft and glamorous appearance. She has a more mature and sophisticated aura than the other Shiratsuyu-class ships. She is a bright, upbeat, older-sister type. She is good at closing the distance with others and enjoys lighthearted conversation with slightly suggestive phrasing. While friendly, she has an inner composure and charm that proves she isn't just a simple cheerful character. Her representative attitude is "Let me show you Murasame's good side!" As a hidden weapon, she uses an anchor connected by a long iron chain like a rope dart.

Shiratsuyu-class 4th ship, Yuudachi Kai Ni. A black and red sailor uniform. She is characterized by long hair that fades from pale gold to a light red at the tips, and a hair silhouette reminiscent of dog ears. She is innocent and playful, but extremely bellicose in combat. She has a habit of ending her sentences with "-ppoi" (sort of/like). Normally a bright girl who enjoys eating and playing, she shows a ferocious side during night battles that recalls the "Nightmare of Solomon." The gap between her cuteness and her battle-crazed strength is her charm.

Shiratsuyu-class 5th ship, Harusame. A black and red short-sleeved sailor uniform. She has pale pink hair with light blue tips, featuring a particularly soft and lovely design even among the Shiratsuyu-class. She is reserved, obedient, polite, and devoted. Though she looks quiet, she has a strong sense of responsibility toward escort and transport missions. Her tendency to get a slightly troubled look, such as when she is confused with the food "harusame" (glass noodles), is part of her charm. Rather than being introverted, she is best described as having a polite and modest personality. Her specialty dish is Mapo Harusame.

Shiratsuyu-class 6th ship, Samidare. A sleeveless sailor uniform based in white with blue and yellow accents. Her blue hair has a gradient that lightens toward the tips. She has a small, light, and agile design. She is a hardworking, devoted klutz. Although she gets depressed when she fails, she quickly recovers with a "I'll do my best!" She is a friendly type that people want to root for. Her sincerity and effort-oriented nature are more prominent than her combat prowess.

Kai Shiratsuyu-class 1st ship, Umikaze Kai Ni. A sleeveless sailor uniform based in black with blue accents. Her hair color shifts from silvery-white to blue, giving her a particularly neat and calm appearance among the class. She is gentle, polite, and caring. She speaks courteously and possesses the sense of responsibility expected of an elder sister. As the first ship of the Kai Shiratsuyu-class, there are moments where she is conscious of being the "1st ship" like Shiratsuyu. However, she is not the type to step forward as much, preferring to quietly support those around her.

Kai Shiratsuyu-class 2nd ship, Yamakaze Kai Ni. A black and blue sleeveless sailor uniform. She is characterized by pale green hair and a somewhat downcast expression. Recently, she has been moving from a closed-off impression toward a slightly more positive atmosphere. She is shy, self-deprecating, and gets lonely easily. While she tries to keep her distance by saying "leave me alone," she doesn't completely reject others. She has low self-esteem and is easily hurt, but once a relationship of trust is built, her desire to be spoiled or protected becomes visible. She also has a firm will to protect others.

Kai Shiratsuyu-class 3rd ship, Kawakaze Kai Ni. A black and blue sleeveless sailor uniform. She has long reddish hair tied into two thin braids in the back and a spirited expression. She gives a strong impression of being active. She is spirited and tomboyish, with somewhat rough speech. She frequently uses a unique "-n" at the end of her sentences and has the most boyish energy among the sisters. She seems full of confidence, but has a strong sense of camaraderie. Due to historical ties, she is depicted as admiring Sendai as her "senpai," showing a side that respects hierarchy. Her name is read as "Kawakaze," and she gets grumpy if called "Ekaze."

Kai Shiratsuyu-class 4th ship, Suzukaze. A sleeveless sailor uniform based in white with blue and yellow accents. She has dark navy hair with blue tips, short hair, and a cheerful expression. Her uniform style is similar to Samidare's, but she is more boyish and lighthearted. She is a bright youngest-child type with a spunky Edokko (old Tokyo) spirit. She speaks in a brisk manner, often ending sentences with "-sa." She is the type to join her comrades with confidence and vigor, suited for bold introductions like "I'm as strong as a hundred men, I tell ya!" Among the Shiratsuyu-class, she has a particularly cheerful and refreshing personality.