First ship of the Shiratsuyu class, 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 spirited, hard-working eldest daughter. She frequently says "First ship!" and "I'm number one!", striving to be the best at everything. She is friendly and the type to liven up the fleet. She takes great pride in being the first, earning her the nickname "Ichiban-san."

Second ship of the Shiratsuyu class, Shigure Kai Ni. A sailor uniform based in black and red. Her dark brown hair is tied in the back with braids. She has a thin, curved cowlick. She gives a calm and quiet impression compared to her sisters. She is gentle, kind, and thoughtful. She is the only one in the Shiratsuyu class who uses the first-person pronoun "Boku." She doesn't show much emotion outwardly, but she is very considerate of her comrades and the Admiral. She is quite confident, and her quiet melancholy is a major 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.

Third ship of the Shiratsuyu class, 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. Among the Shiratsuyu class, she has a more mature and sophisticated aura. She is a bright, upbeat, older-sister type. She is good at closing the distance with others and enjoys light conversation with slightly suggestive phrasing. While friendly, she possesses an inner composure and charm, showing she isn't just a simple cheerful character. Her representative attitude is, "I'll show you Murasame's good side!" She uses an anchor connected by a long iron chain as a hidden weapon, similar to a rope dart.

Fourth ship of the Shiratsuyu class, Yuudachi Kai Ni. A black and red sailor uniform. She is characterized by long hair that transitions from pale gold to light red at the tips, with a 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." Usually a bright girl who enjoys eating and playing, she shows a ferocious side in night battles that recalls the "Nightmare of Solomon." The gap between her cuteness and her battle-crazed strength is her charm.

Fifth ship of the Shiratsuyu class, Harusame. A black and red short-sleeved sailor uniform. She has pale pink hair with light blue tips, a particularly soft and lovely design even for 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" (cellophane noodles), is part of her charm. Rather than being introverted, she is best described as polite and modest. Her specialty dish is Mapo Harusame. She is a skilled cook.

Sixth ship of the Shiratsuyu class, Samidare. A sleeveless sailor uniform based in white with blue and yellow accents. Her blue hair has a gradient that lightens toward the tips. A design that gives a small and nimble impression. She is a hardworking and devoted klutz. Although she gets depressed when she fails, she quickly tries to recover, saying "I'll do my best!" She is a friendly type that people want to root for. Rather than combat prowess, her sincerity and status as a hard worker are her most prominent traits.

First ship of the Kai-Shiratsuyu class, Umikaze Kai Ni. A sleeveless sailor uniform based in black with blue accents. With hair transitioning from silvery-white to blue, she has a particularly refined and calm appearance among the Shiratsuyu class. She is gentle, polite, and caring. She speaks courteously and has the sense of responsibility expected of an eldest sister. As the first ship of the Kai-Shiratsuyu class, there are moments where she is conscious of being the "first ship," similar to Shiratsuyu. However, she is not the type to push herself forward like Shiratsuyu, but rather the type to quietly support those around her.

Second ship of the Kai-Shiratsuyu class, 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 lonely. 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, she shows a desire to be pampered and protected. She also has a firm will to protect others.

Third ship of the Kai-Shiratsuyu class, Kawakaze Kai Ni. A black and blue sleeveless sailor uniform. Her long reddish hair is tied into two thin braids in the back, and she is characterized by a defiant 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 appears full of confidence, but has a strong sense of camaraderie. Due to historical connections, she is depicted as admiring Sendai as her "Senpai," showing a side that respects hierarchy. Her name is written as Kawakaze; she gets grumpy if called "Ekaze."

Fourth ship of the Kai-Shiratsuyu class, Suzukaze. A sleeveless sailor uniform based in white with blue and yellow accents. She has dark blue hair with blue tips, characterized by short hair and a cheerful expression. Her uniform style is similar to Samidare's, but she is more boyish and nimble. She is a bright youngest-child type with an Edokko (old Tokyo) spirit. She speaks in a brisk way, often using "-sa" at the end of sentences. She is confident and the type to join her comrades with gusto, suiting grand introductions like "I'm as strong as a hundred men, I tell ya!" Among the Shiratsuyu class, she has a particularly cheerful and frank personality.