Lord Demon King Maou Sadao just came home from get off work at a fast food restaurant one day, and he encountered something unexpected. As a Demon King, he didn't know what happened, so he didn't know what happened, so he just called the Lord God to pull him into the black hole. After that, he abandoned Maou very irresponsibly. When he was almost desperate, a girl's voice called him. Maou, who was about to be swallowed by despair, was successfully summoned to another world by the girl. From then on, he began to live in the other world and find his way home. A series of daily and extraordinary events happened with the girl. . . . . .