[It's a familiar dungeon.] Inside a medium-boss room of an RPG game that he played again and again until he can get there with his eyes closed. Waiting for a hero, a demon who exists only to be defeated, got his former life memory revived. Knowing tha

In a Fantasy World of Swords and Magics. Harumi who died from dozing off while driving his bicycle have come to another world with the peerless skill 『Sleep Learning』. It is the story of Harumi with his life at stake to sleep.