My Neighbor is a Yandere!?

Seijuro, a normal guy in his twenties, wakes up in a room he doesn't remember from a coma after a mysterious accident that happened seven years ago. - With almost no recollection of his memories and past, he meets his gorgeous neighbor Nanase, who apparently took care of him all this time. She looks like a good and kind girl at first sight, but it seems that she has taken some drastic and rather extreme measures during all this time. - It's up to you and your own decisions to believe her or not to recover Seijuro's memories and unveil the mystery that surrounds this girl and her actions.​