The Unknown Origin Story T TUOST

Issac Garretwards, a student who often gets bad treatment meets Reynold Ellis in entering a dungeon called Unknown Origin. That said, the place is filled with mysteries that have yet to be answered. One by one, the victims fell due to the many portals connecting to the place. Issac and Reynold with Ninja who are victims of the atrocities of Demons, Kiyoyasu Ogasawara explores the deepest dungeons to stop the casualties.