Hard to Care About
I find it hard to really care about any character in this series, they're all bland with nothing much to said about them. ALL of their bios even say "much is unknown about <character name here>", even a very certain group of vampires apparently is "unknowable".
Mystery can be great as a plot devise, but man... What is going on?
The animation has always been impressive, it's just a shame you had a weak story and NO character intrigue to back it up.