Mariya Mikhailovna Kujou

Mariya Mikhailovna Kujou is a second-year student and the student council secretary. Her nickname is Masha and she is the older biological sister of Alisa Mikhailovna Kujou. She is one of the two beauties from her school year. She is popular for her looks and motherly gentle aura. She is called the "Madonna" of the school because of this.

Masha purposefully acts like an airhead around Alya because she doesn't want to compete with her. She acts like this because she loves her sister very much. In reality she is very mature and serious deep down inside. Masachika finds it very hard to read her because of this.