終わりの神 Owari no Kami

For his whole life, Kagawa Izanagi has had a strange mark that strongly resembles a snake on his right forearm. When he was a child, he heard a woman's voice in his head tell him that when the time comes, the snake deity known as Jagiri would lend Izanagi its power, and he would become the next snake deity. Because of this, Izanagi has nightmares about it every night. Fast forward, Izanagi is in his third high school year. Izanagi is a loner has a delinquent reputation. No one tries to become his friend, because of the "curse" that befalls anyone who tries to talk to him. His classmates attribute the curse to the snake mark on his arm, when the truth is, it began with a girl he met years back who uses the alias "Saki", whom he can't remember the identity or appearance of. One fateful night, when a group of students set out to kill Izanagi and end the "curse", the mythic Jagiri appears and fulfills the prophecy that Izanagi recieved long ago... Will the help of the Jagiri be enough to unmask the culprit of the tragedy around Izanagi and put an end to the true "Curse"?