The "Stolen Omniscience and Omnipotence". Stage 5 boss of Brilliant Pagoda or Haze Castle.
An oni who was captured by Taira no Fumikado's grandfather and forced to swap bodies with Fumikado for their plans to become the True Emperor. Now trapped in a mutated human body that's almost close to a homunculus, Para allied with Taira no Chouki in order to get revenge on Fumikado for ruining their life.
The following tags implicate this tag: para_(len'en)_(oni) (learn more).