Ore no Kanojo to Osananajimi ga Shuraba Sugiru
* Based on a light novel series of the same name, written by Yuuji Yuuji and illustrated by Ruroo.
Kidou Eita is a 1st-year high-school student. He excels academically and expresses contempt for romantic relations. He lives a normal school-life along with Harusaki Chiwa, his childhood friend whom he holds the same regard as a younger sister.
One day, the school's prettiest girl, Natsukawa Masuzu, suddenly declares her love to him. However, her real purpose is to establish a fake relationship in order to create a pretense for those around her not to bother asking her out. To this end, she makes Eita her "boyfriend" over his objections.
The carnage becomes even more vicious when Eita's "former girlfriend" Akishino Himeka and "fiancee" Fuyuumi Ai are added into the mix.