A stranger transmigrates into the world of ninjas and inherits a character card system, allowing him to transform into the characters on the cards. S-rank, A-rank, B-rank, and C-rank ninjas, unique jutsu, and powerful summoning beasts are at his disposal. As San Shui gradually uncovers the system's secret functions, he finds himself surpassing everyone else. "My name is Yuzugawa San Shui, but you can also call me the Fifth Hokage."