User blog comment:IamJakuhoRaikoben/Chapter 364: Tartarus Arc, Part 1: Sins and Sinners, Review./@comment-24257713-20131220080048/@comment-5288632-20131220172750

If Tartarus erased their memories while experimenting the girls into demons, I'll do to them for what Nui Harime did to Ryuko's father! Oh wait. Is that a spoiler? Sorry! XD