A second-year at Rokukeikan Academy, she is Keisuke's classmate & considered to be the most beautiful girl in his class. She's always by herself in class. A observant, quick-witted girl who keeps cool even in extreme situations; it is said that she used to be always by herself in class, barely interacting with her classmates. After some scenes, Nemu is shown to be a cruel sadist who tries to make Keisuke unleash his interior demons, taking advantage of the situation.