I'm going to say this. I don't think oriobana is dead considering she's half tsugumogami and her other half could still be alive. I can already see Kazuya razing that company.
Starting to think ouhi dying was bait because she has multiple copies of herself and her off body is in a different location. Plus I can't see them killing a strong supportive character like that.
So ouhi has really been nerfing herself this entire time. The m ore i see what she's capable of the more I hope she isn't dead. Which considering she's half tsugumogami i think only one part died.
I believe sunao is about to snap. This guy is most likely the cause of her brothers death and going by his words he gives zero fcks. I can see sunao going domination mode.