Yu Yu Hakusho (AU)
Set in an AU (Alternate Universe) of the Yu Yu Hakusho world, this particular story is taking place in the Makai, or Demon World, during the events of The Black Chapter Saga, Season Three of the anime.

The upheaval in the Makai is palatable as the steadily opening portal--courtesy of Gatekeeper Itsuki of the Sensui Seven in Ningenkai, Human World--on the First Level is enticing weaker apparitions to flock by the thousands towards the deletable scent of humanity.

For most here, though, it is simply business as usual.