My Yandere Girlfriend

A yandere is romantic, kind, loving, sweet, gentle on the outside but may be brutal, psychotic, or deranged on the inside. Haru Naoki had a perfect girlfriend,Chiyoko Murasame, a girl that lives next door. They were a perfect couple but Chiyoko suddenly changed and began to be over possessive of Haru. She is prepared to kill just to have Haru.