Read Kaettekita Motoyuusha Manga:
Once, a hero has been summoned to a different world in order to defeat the demon king. After the war stretching 3 years ended, the commendable hero slayed the demon king. And he was forcibly deported back to earth after being dismissed."Give me a break! Elves in addition to beast race, dwarfs and demon race. Even though I wanted to make a harem in the different world I saved! My dream will not come tru more.. e on earth, where there is no magic at all." Thus, the hero returns on his own. Without the blunder of being extradited to earth this time, he will build a harem of his own in a different world.