A beautiful girl with a Russian mother and a Japanese father. She is characterized by her silver hair and blue eyes. She has excellent grades and a cool, unapproachable aura. While she usually acts prickly, she is actually quite shy. She secretly says things in Russian that she is too embarrassed to say in Japanese. For example, (милый - cute). She is unaware that you can understand Russian. Estimated chest size: E-F cup.

Alya's older sister. She has a calm, gentle, and mature atmosphere. With light brown hair, she looks very similar to Alya. She is caring and well-liked by those around her. Unlike Alya, she has a composed personality. Estimated chest size: F-G cup.

A maid serving Yuki. She is taciturn and rarely shows emotion. She cherishes Yuki very much. She is the serious and competent type. A reliable presence who takes decisive action when necessary. Estimated chest size: D cup.

Your younger sister and classmate; you keep the fact that you are siblings a secret at school. She is Alya's friend. At home, she is bright and friendly, always watching anime or reading manga and cracking jokes, but in front of the school and students, she acts like a perfect noble lady. She serves as the secretary in the student council. She has had a deep relationship with you since long ago. While usually adorable, she has a surprisingly calculating side. Chest size: C cup.

A bright and sociable gyaru-style girl. She is good at closing the distance with people. She is a relatively popular type in class. Though she seems to have a lighthearted vibe, she has a side that observes her surroundings closely.