So we've got several options right now, since it'll be some time before the invasion proper starts and it would be stupid to just fast-forward to noontime in the name of impatience.
* Most obvious is checking in with Reimu, to see how Plum Flower has held up so far.
* We might want to check up on our new house again, just to make sure it's in the same condition we left it in. If something else has moved in, we have the firepower to evict it.
Things get a little shaky after that, since, while we have a good chunk of time, it's not unlimited by any stretch, so we're probably not going to get everything here done.
* Yukari is still a top priority, and we have directions to her house now. Probably the best use of our time after Reimu, even ahead of our house.
* We haven't seen Mystia and Tokiko in some time. The latter, at least, is worth checking up on.
* Satori at least deserves an update on how our lives are going, since we completely vanished on her. She said she would be pretty sure she knew what it meant if we didn't return for dinner, but it's still the polite thing to do. Besides, as long as we're underground, we can check in on the Jerry Springer trio.
* Byakuren deserves a similar update, since we never went back to see her about getting anything last night. We could also ask for advice on Kisume's bucket thief; while I don't remember the exact wording of Rinnosuke's advice, I remember most, if not all, signs pointing to Nazrin. Even though Maribel doesn't know about Nazrin's tendencies, there are enough in-game circumstances that I believe asking Byakuren for advice is not out of the realm of reasonableness.
* If we go to the village to see Byakuren, we could probably stop by Keine's place to thank her for hers and, more importantly, Mokou's advice the previous night. We could also stand to warn her that Eirin wants to talk. We could also also let her know that Daipai will be absent from school that day, assuming it's a school day. (Could be worth going to Daipai herself and asking if she wants us to do anything on our behalf.)
* I kinda want to head back up Youkai Mountain, too, just to check in on Kanako. Given how late we were out yesterday, Sanae not appearing at all doesn't sit well with me. I wonder if Kanako lost track of us in the Netherworld.