It is the story about how a supreme being who was bored reincarnated himself with his power and memory sealed on earth and then lived an boring life as powerless mortal then got hit by a truck and again got reincarnated into a fantasy world with sword and magic as the crown prince of the most powerful empire in that universe and how he goes to school in an fantasy world to fulfill his school life fantasy and his fantasy to build his own kingdom . our protagonist has vowed to fulfill each and all the fantasies of every otaku