Iroha Isshiki

Iroha is a first year student who manages the football team. As she was recommended as a candidate for the student council president in a prank, out of her dislike of the role, she filed a request to the Service Club in order to not get elected and yet not lose in an embarrassing fashion. She eventually accepts her role of being the student council president after Hachiman managed to convince her.

Source: Wikipedia