Masachika Kuze

The protagonist of this work. He has been sitting next to Alisa since she transferred to his school in the third year of junior high. He is in Class 1-B. His parents are divorced, and he has been living with his father, Kyotaro, a diplomat, ever since. His original family name was his mother's, "Suo," and Yuki Suo from Class C is his real younger sister.

Due to his grandfather Chiku on his father's side, who made him watch countless Russian films during his childhood, and meeting a Russian girl who became his first love in a park during elementary school, he learned Russian to speak more with her, but he keeps this a secret from everyone except Yuki. He is an anime otaku, often staying up late and always sleeping in school. Later, he became the student council clerk due to Touya's invitation, Yuki's assertiveness, and an incident with Alisa. During his middle school years, he served as the vice president of the student council. He is quite a siscon.

According to Chiku, he looks just like his father, Kyotaro, when he was young, but his personality is very much like his mother, Yumi.