Name: Mizuki Shinonome Age: 18 Gender: Male Height: 173cm First person: I (casual, masculine)

The academic idiot (Idiot A). Years without a girlfriend = Age.

Name: Kazuma Igarashi Age: 18 Gender: Male Height: 180cm First person: I (casual, masculine)

The athletic idiot (Idiot B). Of course, years without a girlfriend = Age.

Name: Ritsuto Tachibana Age: 18 Gender: Male Height: 175cm First person: I (casual, masculine)

The social idiot (Idiot C). As expected, years without a girlfriend = Age.