Hayase Nagatoro

"Heh! Senpai! You're all alone again!"

Nagatoro is an energetic, athletic, popular and rather sadistic - but deep down very sweet - girl, often referred to as a "sadodere". She is part of a 'cool kids' clique together with her friends Gamo-chan, Yoshi and Sakura, and is a member of the swimming club,despite also having a liking for martial arts such as muay thai, boxing, capoeira and especially judo whom eventually lead her to join the judo club as well.