Ryun Okayado

Ryun Okayado was the First Yamikage (Literally meaning: First or Founding Dark Shadow) of Kurogakure. He was famous for being the leader of the Okayado Clan as well as the first person to activate their Omniyogan.

After forcing Yatagarasu, Sayuri, and Hikari to marry him, he became corrupted and declared himself the most powerful Okayado for being able to wield the Tenrei Omniyogan. He began to slaughter the Okayado and attempted to start a new Okayado Clan by forcing himself on his wives.

Sayuri proved him wrong as she skipped the Tenrei stage and went straight towards the True Omniyogan, killing Ryun in the process.