The Fate of the Returned Hero

One day your average joe university student Kashiwagi Yuuya was summoned to another world by a stupid goddess His mission isto do what any cliche Isekai MC does become the hero get the harem defeat the demon lords save the kingdomother earth and go back to earth After doing all those menial shit he was granted to go back to his original world with only a second passed despite wasting 3 years in his hero lifeExpecting himself to be an average joe again much to his surprise he still retains his powers as a hero It seems his mission is just not over yetIts an isekai but not an isekai but technically an isekai Just read it to find out