Nagisa Shiota is the main protagonist and narrator of Assassination Classroom. He is a student in Korosensei's Class 3-E at Kunugigaoka Junior High School who has a natural talent for assassination despite his overall passive nature.
Nagisa is the son of Hiromi Shiota and her presumable ex-husband. His mother had hoped for a daughter so she could experience all the things she had missed as a child through her but got a son instead. As a result, she dictated his life from forcing him to keep his hair long, to being forced to cross-dress and verbally abused him whenever he spoke against her. Her personality also caused her husband to leave her and Nagisa.
Nagisa was in Class D during his first two years of middle school before falling into Class 3-E due to poor grades. During those two years, he hung out with fellow classmate Karma Akabane, although they slowly drifted apart before becoming classmates again.
Soon after starting the new term as a Class E student, Nagisa met Kaede Kayano, who gave him what would become his signature pigtails instead of the ponytail he usually uses to keep his long hair from being less noticeable, thus beginning their friendship.
