The Big Five (五英傑 Go Eiketsu, lit. "Five Masterminds") is a group of students from Class A who have the highest marks in each of the five core subjects as well as overall. They are prided by Kunugigaoka Junior High School.
The Big Five are made up of students led by Gakushū Asano who score the highest marks in each of the five major subjects and overall. Three of the Big Five are members of the student council and each member is either wealthy or of high status.