This went much the way you would expect, though the scene change to a hot spring was kind of out of left field. While we had already done pool and beach it didn’t seem like the show had any way to contrive a hot springs visit. How I underestimate anime sometimes. Apparently you can always find a way to send a group of unaccompanied teenagers to the hot springs. Anyway, the romance is nicely wrapped for the main couple and the other characters get as little development as always and it all ends sweetly (if a little creepily) ever after so the show maintained it’s consistent tone throughout.
Momokuri is available on Crunchyroll.