Otoko Girai na Class no Bijo ga, Jitsu wa Brocon Shitte Shimatta Kekka.
男嫌いなクラスの美女が、実はブラコンだと知ってしまった結果。
A high school student named Eiji Mizuno learns from his sister that she has a boyfriend and decides to find out who he is by following her on a date. While he does so, he notices someone else also watching them. That person is Aoi Hasegawa, a classmate who is known for disliking men. It turns out her boyfriend is Eiji's sister's partner. To break up the couple, Aoi and Eiji form an alliance and begin pretending to be a couple themselves.