Meet Hiyuuki Iori, 15 years old, black hair and blue eyes, 1,65 meters tall, with pale wite skin and a slim, a half between a bitish father and a japanese mother, living with his mother in a isolated city in the north of hokkaido in a small city. The lineage of his mother runs an old temple in the city, but as no one goes to that temple animore, he is the only one that keeps the temple clean and fix it sometimes. One day, he wakes up... and he sees a game notification in front of his face!