Ryūshi (Translates to Particle in Japanese) also known as The Second Mū is hailed as one of the rarest and most powerful ninjas of his time. He currently travels the world, finding a purpose for himself with a friend of his named Kegareta Kamizuru. People have speculated he was either a reincarnation of the Second Tschucikage or an Edo Tensei of Mū but this was disproven on many occasions.