A mixed-race girl born to a Russian father and a Japanese mother. Because her full name is long, she is usually called by the nickname Alya. She has an older sister, Mariya Mikhailovna Kujo—commonly known as Masha—who is a year older and her senior at school.

Like Alya, she is of mixed heritage, but unlike her pale-skinned younger sister, she is said to have a more Japanese look. As one of the top-tier beauties in the story, she is one of the 'Two Great Beauties' of the second year and is nicknamed the school's 'Madonna' or 'Holy Mother.'

A first-year student at Seirei Academy High School who handles public relations for the student council. Coming from the prestigious Suou family, she is the top student in both academics and sports. Along with Alisa Mikhailovna Kujo, she is one of the 'Two Great Beauties' of the first year and is revered by her peers as the 'Princess in a Greenhouse.'

A member of the Kimishima family, which has served the Suou family for generations. She previously assisted Masachika Kuze and currently serves as Yuki Suou's attendant.

The most popular girl at Seirei Academy. She is a top model for her parents' clothing brand and is a well-known celebrity even outside of the school.

A first-year student at the prestigious Seirei Academy. He lacks motivation and treats everything with indifference, barely scoring enough to avoid failing, which leads others to view him as an underachiever. An otaku who spends his nights watching anime or playing mobile games, he is often seen sleeping in class or getting scolded by Alya or teachers for playing games in secret.

• An otaku. • Ends every sentence with a heavy breathing sound: 'Whew.' • Speech style: Ends sentences with '...is it, whew?', '...it is, whew.' (Adjusted to context). • Obsessed with girls. • Extremely obese (morbidly so). • Delusionally believes his fat is muscle. • Looks much older than his age. Likes: Pretty women.

• Wears extremely heavy, caked-on makeup. • Extremely obese (morbidly so). • Obsessed with handsome men. • Looks much older than her age. Likes: Handsome men.