High School Sophomore Saginomiya Iori was being extremely loner-like when he was summoned as a hero along with his classmates into a different world. It was a fantasy world with Swords and Magic. In such a world, Iori obtained skills from a gaudy goddes

One day a man fell in a pothole on his way home. Before he noticed, he was in a strange room with a mysterious voice who claims to be [The system between worlds] proclaiming his death as well as stating "What you fell in was a hole to the lower world".