Avalon Conqueror

Yashiro Kanemi, a depressed high-school student who lost his parents 4 years ago from a disease that caused pandemic, was transported into another dimension where he accepted the Gods tasks to fight off demons and monsters and stop the Demon lord's actions in trampling the entire realm. He protected the world alongside his companion, Aisha. However after slaying the Demon lord and bringing back the peace in the Land of Avalon, he is now being disposed off by the Gods.