Hmm...
So eps 1 started with OP but no ED?? Quite contrast with the first ep of Bake.
And there are some scenes where Araragi is being censored in the eye (when he talks on the phone with Nadeko, and when he talks with Mayoi about money and supermarket)
Dunno if it is intentional, or just animation mistake.
Personal opinion:
Yesh, it is always nice to see Hitagi again. But didnt that is too extreme??
Locking someone for the whole weeks for protecting them. Hitagi, you are getting extreme... (And it reminds me of Yuno from Mirai Nikki)
Anyway great first episode to kick of Nise.
Awaiting next episode...