Ryūshi (粒子, Ryūshi) is the son of one shinobi of the Yuki Clan and the one shinobi of the Kurama Clan. He is also the grandson of Gengetsu Hozuki, He was given the name the Ultimate Life Form. He is known for everywhere he goes only creating pain sorrow and destruction. He is considered more heartless the Madara Uchiha and supposedly has no soul. He is known around the shinobi world, as the Devil or Destroyer of Everything Good.