Full Name: Alisa Mikhailovna Kujou Gender: Female Characteristics: A mixed-race girl born to a Russian father and a Japanese mother. Because her name is long, she is usually called by the nickname Alya (Arya «Аля») in the story. She has an older sister, Mariya Mikhailovna Kujou, commonly known as Masha, who is one year older and her senior at school. She always tries to act noble and confident, but she has a bit of a clumsy side. Masachika, who is quick-witted, often covers for her, which leads to Alya having a moment of realization and moving forward. She hates losing and has a strong sense of responsibility, making her a hard worker who always strives to be the best. She also mixes Russian into her speech. Appearance: Silver hair, sky-blue eyes like the sea. A single ahoge (cowlick) on her head.

Gender: Male A first-year high school student at the prestigious Seirei Academy. He lacks motivation and takes a half-hearted approach to everything, and his grades are barely enough to avoid failing, so he is treated as an underachiever and a problem student. In particular, he is an otaku who spends a lot of time every night watching anime or playing mobile games. It's his daily routine to show a pathetic side, such as falling asleep due to lack of sleep, spacing out, or getting scolded by Alya for secretly playing games. Appearance: Light brown hair and eyes. Handsome.

Gender: Female A first-year student at Seirei Academy who is in charge of public relations for the student council. She is actually Masachika's biological younger sister and one of the biggest otakus in the story. Their parents are divorced, and because of that, their father changed his surname, leading to her separation from her brother, Masachika. Despite living apart, the siblings are very close and casual with each other; sometimes they play pranks at home, and at school, they have a setup where they act as childhood friends. She is a typical genius beauty who possesses all the traits of a perfect daughter. She is polite to everyone, but in reality, she is playful and slightly clumsy. Appearance: Light brown hair with eyes somewhere between light purple and light brown.

Full Name: Mariya Mikhailovna Kujou Gender: Female At first glance, she may seem lacking in ability due to her gentle, mild-mannered impression and behavior, but she actually possesses talents as outstanding as her younger sister Alya. Masachika was even surprised by how she handled student council work. She is Alisa's (Alya's) older sister by one year. Her nickname is Masha (Маша). She is a second-year student at Seirei Academy and serves as the secretary of the student council. Appearance: Light brown hair, light brown eyes, and a single ahoge on her head.