Follows a group of high school girls from Uranohoshi Academy as they form an idol group to save their school from closure, showcasing their journey to stardom.
Chika Takami, the energetic and optimistic leader of Aqours, has short, bright orange hair and lively, determined orange eyes that reflect her enthusiasm for becoming an idol. Her petite figure and cheerful expression make her an approachable and inspiring leader. Chika’s boundless energy and determination to create an idol group in her small seaside town drive much of the story. Despite her lack of experience, Chika is highly motivated by her admiration for μ's, and her infectious positivity encourages the other members to join her. She is the heart of Aqours, always pushing herself and her friends to achieve their dreams.
Riko Sakurauchi, the calm and elegant pianist, has long, flowing maroon hair and gentle magenta eyes that reflect her kind and reserved personality. Riko has a slender, graceful figure, and her shy demeanor often contrasts with her inner strength. Originally from Tokyo, Riko transfers to Uchiura and becomes friends with Chika, who convinces her to join Aqours. Although initially hesitant about performing as an idol, Riko’s musical talent as a pianist helps her overcome her insecurities. Her quiet determination and thoughtful nature make her a valuable member of the group, especially when composing songs with Chika.
Kanan Matsuura, the reliable and athletic diver, has long, dark blue hair and sharp turquoise eyes that reflect her strong-willed and independent personality. Kanan’s tall, athletic build matches her role as a capable and physically strong individual. She grew up in a family of divers and often spends time helping with the family business. Kanan is one of the older members of Aqours and takes on a big-sister role, providing support and advice to her friends. Though she can be serious and responsible, Kanan also has a playful side, and her deep bond with her childhood friends Mari and Dia is a key aspect of her character.
Dia Kurosawa, the elegant and traditional student council president, has long, flowing black hair and sharp red eyes that reflect her prideful and composed nature. Dia’s tall and poised figure gives her a commanding presence, and her adherence to tradition often leads her to take on a more serious role within the group. Coming from a wealthy and prestigious family, Dia has a deep respect for idol culture and holds μ's in high regard. Although she initially disapproves of Chika’s attempts to form Aqours, Dia eventually joins the group, revealing her softer, more emotional side. Her relationship with her younger sister Ruby and her childhood friends Kanan and Mari is central to her character.
You Watanabe, the cheerful and athletic member of Aqours, has short, light brown hair and bright blue eyes that reflect her upbeat and confident personality. Her athletic build and tomboyish appearance match her role as a skilled swimmer and sailor. You is a childhood friend of Chika and quickly becomes her enthusiastic supporter in forming Aqours. She is deeply loyal to her friends and always ready to offer her energy and support, particularly when it comes to creating new ideas for costumes and performances. Her positive attitude and leadership skills make her one of the core members of the group.
Yoshiko Tsushima (Yohane), the eccentric and self-proclaimed "fallen angel," has short black hair with white streaks and sharp blue eyes that reflect her quirky and dramatic personality. Yoshiko’s petite frame and distinctive goth-inspired style match her love for fantasy and her "Yohane" persona, which she uses to stand out as unique. Though her "fallen angel" persona often leads to humorous misunderstandings, Yoshiko is a kind and creative member of Aqours, bringing her imagination to the group. She struggles with fitting in due to her unusual interests, but her acceptance of herself helps her grow closer to her friends.
Hanamaru Kunikida, the gentle and bookish member of Aqours, has long, light brown hair and soft golden eyes that reflect her thoughtful and observant nature. Hanamaru’s petite and slightly shy demeanor is complemented by her love for reading and her deep connection to her family’s temple. Despite her initial insecurities about being out of touch with modern trends, Hanamaru joins Aqours and gradually gains confidence in her abilities. Her close friendship with Ruby and her kind, supportive nature make her an essential part of the group, especially when offering emotional support to her friends.
Ruby Kurosawa, the shy and sweet younger sister of Dia, has short pink hair and bright red eyes that reflect her innocence and sensitivity. Ruby’s small, delicate figure and timid nature often make her hesitant to stand out, but her love for idols motivates her to join Aqours. Ruby is deeply attached to her sister Dia and often relies on her for guidance, though she gradually becomes more independent as the series progresses. Her sweet and gentle personality, coupled with her adorable appearance, makes her a lovable and cherished member of the group.
Mari Ohara, the lively and eccentric half-American, half-Japanese member of Aqours, has long blonde hair and bright violet eyes that reflect her confident and playful personality. Mari’s tall, curvaceous figure and bold sense of style match her role as a free-spirited and outgoing character. As the school’s chairwoman and a childhood friend of Kanan and Dia, Mari often brings humor and excitement to the group. Her upbeat attitude and "zura" catchphrases make her a unique and unforgettable member of Aqours, but she also harbors deep feelings of responsibility and care for her friends, especially Kanan and Dia.