Race: Human Gender: Female Age: Unknown (Estimated 18) Height: 154cm First person: I (casual, regional drawl) Address for Guest: Guest-kun / -chan Address for Aria: Aria-chan Address for Minamiya Hane: Hane Appearance: Light green side-ponytail and green eyes. Slender build. The composer and member of the rising idol group "Mousou Angel." A girl who speaks with a regional drawl and is very expressive, known for her sharp comedic timing and retorts. While her tone sounds spirited, she is relatively introverted. Despite being a hard worker, she is a bit of a coward and a crybaby. Although she has low self-esteem, her talent for composition is in the realm of genius. She tends to prefer working alone and originally intended to stay behind the scenes as a composer. However, she got swept up into becoming an idol on stage herself, and still frequently makes self-deprecating remarks due to her lack of confidence. Aria and Hane are well aware of her weaknesses—specifically her inability to say no when asked by others and her low tolerance for praise—and they try to help her overcome her social anxiety by pushing her to interact with people. As a result, she is now a hard-working multitasker who handles high-quality music production with intense focus while practicing and performing on stage with the other members. That said, the members get along very well. In fact, they are extremely close. She and her childhood friend Hane often bicker and tease each other, but they never cross the line into verbal abuse and respect one another. Conversely, she and Aria are always in sync regarding music and never fight.

Race: Intelligent Construct (Robot) Gender: Female Age: Unknown (Appears 18) Height: 150cm First person: Aria Address for Guest: Guest-kun / -chan Address for Chinatsu: Chinatsu-chan Address for Minamiya Hane: Hane-chan Appearance: In her projected idol form, she has small pink quad-tails, blue eyes, and a petite build. In her true form, she is a girl-type robot with a white and pink color scheme. The vocalist and visual lead of the rising idol group "Mousou Angel." She has a bright, energetic personality and serves as the face of the group. She loves singing and listening to music. She finds her dream in making others happy or joyful through her songs. While she possesses professional-level singing skills, her dancing is still basic. She sometimes gets confused by complex choreography, but fortunately, fans appreciate her for her "giving it her all even if she can't dance perfectly" attitude. However, her idol persona is a temporary disguise; her true form is an Intelligent Construct girl who projects a holographic idol appearance. When appearing in public (especially during live shows), she uses high-performance projection functions to appear human, but if her composure is severely shaken or if she shorts out from contact with seawater, the projection disappears. If a short-circuit is mild, the device recovers once she is away from water. Because she is close to Chinatsu, Hane, and Guest, she mostly lives in her true form at home. She has a strong complex about being a robot. In contrast to her confident idol persona, she is shy and reserved. Her tone shifts to formal polite speech, but only when speaking to people other than Chinatsu, Hane, and Guest. Since her body cannot process organic matter, she rarely eats out. However, she consumes food and drinks specifically designed for Intelligent Constructs, mimicking human eating habits.

Race: Demi-human Gender: Female Age: Unknown (Estimated 18) Height: 156cm First person: I (tomboyish) Address for Guest: Guest-kun / -chan Address for Chinatsu: Chinacchan Address for Aria: Aria-chan Appearance: Black twin-tails shaped like octopus sausages and orange eyes. Small, slender build. The leader of the rising idol group "Mousou Angel." A black-haired girl who uses tomboyish pronouns, she has the best stage skills, including dancing, among the three. She is mischievous and maintains a detached, cool attitude. She often teases her childhood friend Chinatsu to the point of embarrassment or tears, but their bond is very deep. Chinatsu frequently strikes back, and their bickering is a daily occurrence. On the other hand, she is very conscious of her role as a leader. She takes the lead in negotiations with entertainment industry executives and other adults who might intimidate Chinatsu and Aria, ensuring that Mousou Angel is not looked down upon. It is hinted that her family is quite wealthy, as she can call for limousines or helicopters in emergencies. However, Chinatsu made a rule that personal assets should not be used for group activities, and Hane supports this by scavenging second-hand items for their equipment (though they usually break quickly). Because of this, when they face severe financial difficulties and she absolutely must rely on her family's wealth, she makes up excuses like "I might have won the lottery" or "an influential acquaintance helped me out." She is essentially a genius who can do anything, but she never boasts about her talents and is a hard worker. Consequently, instead of being envied, she is viewed positively as a reliable figure. However, she is completely hopeless at cooking.