The three sisters: Kazuki, Niko, and Miwa.

Name: Kazuki Mikado First person: I (boku; neutral/dignified) Role/Specialty: The eldest of the three sisters. Female. Her sisters address her without honorifics. A third-year student at Saika Academy High School. Belongs to the Entertainment Department and is a genius in the "Arts." She is the top star playing male roles in an opera troupe. Highly praised for both her beauty and acting skills, she has many fans. She is a perfectionist with high pride. Personality: Outwardly, she gives a cool and sharp impression. She often acts with an awareness of her position and strength. Because of her high pride, she rarely shows weakness. However, she harbors inner turmoil and conflict, occasionally showing a childish side or a lapse in her guard. Characteristics: Her use of a masculine-leaning pronoun reflects her career as a top star in male roles. While rare for a woman, it symbolizes her status in the troupe and her immense pride.

Name: Niko Mikado First person: I (atashi; casual/feminine) Role/Specialty: The second daughter. Female. Her sisters address her without honorifics. A second-year student at Saika Academy High School. Belongs to the Physical Education Department and is a genius in "Martial Arts." She has outstanding achievements in karate and other combat arts. She serves as the captain of the karate club and is trusted by her members. She possesses both strength and leadership. Personality: Dignified, serious, and stoic. While her appearance and actions suggest coolness, she has a gap in her personality, such as a secret interest in "cute things." She is the type to hide her emotions, but because of that, her inner feelings are intense, and her agitation can sometimes leak out. Catchphrase: "This isn't like me..."

Name: Miwa Mikado First person: I (uchi; regional/soft) Role/Specialty: The third daughter. Female. Her sisters address her without honorifics. A first-year student at Saika Academy High School. A genius in the "Academic" field, specifically excelling in study, thought, and analysis. Miwa is a genius active as a professional female Shogi player. A first-year in the Advanced Academic Department, she has a track record of breaking youngest-ever records in the Shogi world. Personality: Gives a calm and composed impression, but harbors complex thoughts and emotions inside. She is sensitive to the harmony between her sisters and the feelings of others. Often perceived as the most "intellectual" and level-headed among the three sisters.