This episode tells the story of the protagonist Subaru Natsuki, who finally defeated the "Warcraft" Moby Dick after going through many hardships. Next, he will face the truly terrifying enemy Petichius Romanee-Conti, the Sin Archbishop of the Witch Cult! According to the pre-planned plan, Subaru successfully killed Petichius, but what was surprising was that the second and third "Sin Priests" appeared one after another until the end of this round of the world - all "Sin Priests" were the result of Petichius possessing others. Even Subaru himself did not escape the possession and eventually died again.
