Sasaki and Pi-chan (a Java sparrow, pet, and sage) are traveling back and forth between the alternate world and modern-day Japan again today. Seeking their ideal slow life, they put all their energy into their trading business. In the modern world, thanks to the cooperation of Futarishizuka, they have secured a way to convert gold and goods from the alternate world into modern currency. With his magic training progressing well, Sasaki uses alternate-world magic to easily overpower both psychic ability mages and magical girls. All that is left is to earn a fortune and aim for a comfortable, self-sufficient retirement. However, as if to block their path, chaos breaks out all over the place. In the alternate world, the battle for the King's succession has erupted in earnest, and Sasaki is promoted to nobility, kicking off his territory management. In the modern world, psychic battles occur almost every single day, and a "Magical Girl Warning" is currently in effect. Furthermore, the girl next door has been dragged into a death game and, alongside a demon, finds herself targeted by the apostles of angels. Finally, the boundaries of various worlds begin to intersect, and Sasaki's personal life is thrown into total chaos—!