Ryuu-ou is the Bushinshou of the West, also the King of the Ryuu clan.

Spoiler

He died in volume 9 of the manga. Ryuu-ou went after Ashura after he ran off to find his mother, however in the end Ryuu-ou is killed by the "real Ashura", Ashura’s other side who is the god of destruction who wants to destroy everything. Ryuu-ou apologised to Ashura saying he can no longer keep his promise of protecting Ashura.