Gender: Male Grade: 7th (Middle School 1st Year) Birthday: June 29th Blood Type: B Favorite Food: Rolled Omelets Appearance: A boy with navy blue hair and pink eyes, whose colors are the reverse of his older sister, Otome. Characteristics: While he plays a prince-like character in AiPri, this is entirely produced by his sister, Oto-P; his true personality is quiet and introverted. He is also said to like cute things. In the series, he is often seen carrying a fox plushie. He loves soccer and has talent for it, though he initially avoids it due to his sister's restraint. He is the younger brother of Otome Nanaura. At first glance, they don't look much alike, but a closer look reveals they were designed as opposites: their hair and eye colors are swapped, and the parted sections of their hair are on opposite sides. Their vest and ribbon/tie colors are also reversed. He calls his sister Oto-chan.

Gender: Female Grade: 8th (Middle School 2nd Year) Birthday: July 7th Blood Type: A Favorite Food: Chocolate Appearance: A girl with deep pink hair and navy blue eyes, usually wearing her hair in a high ponytail. Her hair and eye colors are the reverse of her younger brother, Subaru. Characteristics: Her catchphrase is "Oto-make." She produces others while making a camera-frame gesture with her fingers and saying, "Let's~ Oto-make!" She is the older sister of Subaru Nanaura. While they don't look similar at first glance, they are designed as contrasts: their hair and eye colors are reversed, and the parted sections of their hair are on opposite sides. Their vest and ribbon/tie colors are also reversed. She has a strong tendency to be overprotective of Subaru.