I just came back rewatching S1 and man the visuals look even better. There was concern about no news on it for a while, but that seems unfound, but again this is just episode 1.
Urino & Osanai being together has me concerned. We know from last season, Osanai knew how Kobato loves solving cases, which is how she got him to do what she wanted. With Urino who is impulsive, you know Osanai can already figure how to make him work if the need arises. Unlike Kobato, Urino is unaware of her past.
The big concern is when Osanai says, "Otherwise I'd be supporting you for nothing." Towards the end of the episode we see from Kobato's POV the same van that was around during the Isawa arc. There is no way Osanai is responsible for all of these just so Urino has something to write. But the connection feels too real. Do we have an abandoned bicycle that was set on fire? Could that have been the same bike we saw in the early parts of S1? Plus the way things have been happening is that whoever did it wants someone to see these fires.
On another note, not too much from Kobato and Nakamaru's part. Though they make a pretty sweet couple. I am interested in learning more about her.