Baku no Oni

Baku no Oni are the evil counterparts of the baku, beings from Yume-do. Baku no Oni are dreamt up by beings native to Jigoku, and are strong enough to survive into reality after the dreamer awakes. Once they are spawned they have no other purpose than to corrupt things that are not already corrupted. Baku no Oni feel constrained in Yume-do, and attempt to cross over as often as possible, but only the strongest succeed. They have horns and thick, unruly hair, and thick sharp claws that can cut as sharply as any katana. Their claws are also known to exhaust those they strike, even putting some to sleep. (CoR3E p. 86)