I finished seeing the Blood-C sequel movie just now as well, but the 12 episode anime itself... was something really bizarre and "despicably" special. It was too much even for me, and I love Gantz and Elfen Lied!!!
I was expecting it to be the next series after Blood+ knowing it was a spiritual sequel... However it turned out to be thematically and structurally something completely different... It functions a lot like a mixture of "When They Cry" + Gantz.
Only the lead girl Saya's name and "girl fighting monsters with sword" element is taken from the previous series, as this shows thrusts this new Saya (who is noticeably much more cuter, bustier and sexier than her previous version with her extremely hot Alexis Tipton voice), into a world that she seems to be suspiciously OK in.... Living happily.
Without spoiling, this anime tries to hide what it actually is and that's one of the most unsettling things about it.
Aside from the awesome and gorgeous action animation, sexy female characters, jump scenes and an insanely catchy and cool opening which make this anime maybe worth watching, the story is quite shallow and relies on shock value.
But only those who can handle extreme shifts in a shows themes. And I mean EXTREME are advised to watch it. I'm still not okay with its ending which just left me speechless and so empty inside...
Weird thing is I had previously seen the last episodes penultimate horrifying climax in Facebook video in 2020.... And i unwittingly ended up watching the anime itself so many years later... 7:49am 13.4.2025.