An otaku who fantasizes about becoming the protagonist of an online novel all day long, one day his dream actually comes true. In the car going home, he encountered the legendary "adventure" that he had dreamed of. He was actually possessed by a mythical beast and became a superman. From then on, Loli and the Royal Sister were all at his fingertips. Of course, things always have good and bad consequences, because there are still a group of ferocious beasts waiting for him.