Yuma Isogai

Yūma Isogai (磯貝 悠馬, Isogai Yūma) is a student in Korosensei's class 3-E in Kunugigaoka Junior High School. He is the male class representative.

Appearance
Isogai has black eyes and ear lengthed black hair. His uniform consists of a suit jacket worn over a waistcoat, a dress shirt and a black tie, as well as dress pants and dress shoes.

Personality
Isogai is one of the relatively proactive students when it comes to assassination and aims to claim the 10 billion yen reward. In the manga, he is also considered an 'ikemen', which not only means handsome, but can imply a flawless personality. He is noted to have leadership qualities and for being kind, not boastful, and modest to his classmates.

Abilities
Knifework: Isogai excels in knifework and is considered the best out of all the boys in Class 3-E.

Hiroto Maehara
Isogai gets along well with Maehara. With their excellent reflexes, the two can become formidable opponents when teamed up.