As the warlord of Japan continued to fight for dominance a gate appeared spewing untold horrors onto the land of the Rising Sun. Faced with a new enemy the Daimyo's of japan set aside their differences and fought under one banner and faced the barbarians of the Saderan Empire

Meet (Y/N), the most powerful hero on earth... that no one has ever heard of. He's done it all, slay monsters, avert disasters, and save the planet and if there is one thing he's learned is that he REALLY wants a break. After deciding to have a normal life, (Y/N) has chosen to finish high school. And what better place to have a normal school life than Honnouji Academy!!!! Anywhere... Literally anywhere else.