Louis, a working man, after dropping dead from overwork, unexpectedly travels to the Star Continent, where gods roam and hundreds of races stand, becoming the first emperor in the history of the Ense Empire to ascend to the throne as a prince with a foreign surname. At this moment, the Imperial Capital is an ocean of laughter, to which he has made an indelible contribution. Because the revolutionary army is escorting him to the guillotine. As the trapezoidal blade falls, he ends his headless life... or so it should have been. But when he wakes up again, he returns to the moment just before he becomes a prince, with the diary he carried before his death also coming back with him. It records his future. But he doesn't know that Olivia, the Second Princess of the Ense Empire, has just been reborn, too...