Nineteen-Year-Old NEET & Otaku lover Novu Masamune, has been living a normal life since, always being into his games, animes, and mangas like there's no tomorrow. However, he doesn't exactly have a girlfriend, or any person to be right beside him as a matter of fact. That is, until he sees this online compatibility test that can pair him up with a girl of any choice. So, he takes it. But it isn't until the next day, he wakes up to find this hot girl sleeping right beside him by the name of Mira. The only problem is though: Mira isn't technically human. She's a half-demon, and is part vampire. Basically, she can suck the life and blood out of people. However, Mira realizes something about Novu, that he's possibly a special person. And so with that, Mira whisks Novu away to her world. And this is only the beginning.....