Manga Streaming - Bible Black 1

A magical book was discovered in a secluded area of his high school by Minase, a student. He and a few of his buddies began performing a kind of black magic that produces very strong sexual effects on its practitioners. Minase was enthralled by the craft, but had no idea of the tragedies that would ensue. The roots of the book were eventually exposed, and so were the events of twelve years ago on the night of Walpurgis, the night when the power of evil is at its fullest. Minase is unable to emerge from the abyss that he entered after realising what he had done.