I guess Hiyori has a bit of tracking that she can do to be useful for Yato. We’ve also been introduced to Bishamon, the god whose Regalia was originally killed by Yato. All of this is fairly straightforward, but it’s still unclear who exactly Nora is. She was willing to help Yato in the fight against Bishamon, but I would have expected Kuraha to recognize her if she really was some lingering form of the Regalia that Yato killed. It’s possible she’s just some other Regalia that Yato once used and abandoned.
I suppose the main focus of the next few episodes is this “blight” that’s afflicting Yato. Is it just from Yukine or is it leftover from one of battles against the Ayakashi? It also looks like Kazuma will make some sort of request of Hiyori. Judging by his behavior in the battle against Yato, he may be trying to end the fight between Yato and Bishamon altogether.