Why Is the Demon King Reincarnated Surrounded by Magical Girls?

An ordinary college student who was accidentally abducted by a goddess and sent to a different world finally completed the deceptive task of "becoming a demon king and being defeated by a brave man". It seems that he can return home with the reward given by the goddess. No, what does it mean to get used to the life of an ordinary person first and stay in a world with low demons for a few years? Hey, hey, hey, I still retain all the abilities I once had as a demon king. When will I be able to tolerate it completely before letting me go? Eh? This world seems to be full of sweet-smelling magical girls? Hey, Goddess, you were saying that it was the time point when I traveled back after completing the mission, right?