A group of high-school students had an accident on their way to a trip and died but they find themselves in a classroom with a black sphere.

They arrive in silence and darkness. They descend from the skies. They have a hunger for human flesh. They are everywhere. They are parasites, alien creatures who must invade–and take control of–a human host to...

This is a horror action manga about a young man who works as an Onryoji, a spiritual warrior who has turned his own body into a weapon in order to do battle with evil spirits. In the first case, a university...