Some sci-fi plots are staples of anime. The boy who pilots a fighting robot; humans who evolve into cyborgs; cute space girls who fall for the biggest doofus in Japan. Compared to these, time-travel has never been a big anime genre, though it’s been used on many occasions.
Hugh, phew, barneys and boobs, cutthroats, demons and blood...
If this show dropped all the extreme fan-service it would still be an exciting action-horror adventure, not far removed from an extended arc of Supernatural or the like. As it is, you get that and a show that would have broken the jiggle counter if anime DVDs still had them. After decades of evolution, even harem comedies can produce a show with some substance.
Does the future of anime lie on the big screen, and if so, will developments in cinema exhibition technologies redefine its form, content and audiences in the digital age? These are questions many are asking as pundits declare conventional anime’s glory days to be a thing of the past.