A second-year student at Sobu High School. Despite having average grades, athletic ability, and looks, he has maintained his status as a loner by distancing himself from others with his uniquely cynical thought process. Even when dealing with requests brought to the Service Club, he tends to propose solutions based on his negative values that leave everyone else appalled.

A beautiful second-year student at Sobu High School and the president of the Service Club. She does not socialize with her classmates and speaks the blunt truth without hesitation. While she initially clashed with Hachiman and opposed his methods, she has secretly developed feelings for him.

Hachiman's classmate and a member of the Service Club. Although she appears to be a bright, trendy girl, she is constantly reading the room and trying to fit in. She joined the club out of admiration for Yukino's ability to express her thoughts directly. Like Yukino, she is attracted to Hachiman.

The advisor for the Service Club and a female Japanese language teacher who also handles student guidance.