Nah, you're not wrong. I never read the source material so wouldn't know but I'd get it's a combination of pacing and the inability to display the depth of whatever the LN had. Like how in the first and/or second chapter, a bunch of the convo with the king was cut so it gave off a really...
I'm guessin she's a serial lolicon, ending implying that even though her former student came back, she shouldn't have done that because she'll spoil, unlike the new girl she's set to meet.
Why have I come to discover this anime at the worst time, please god just like Shino and Nozomi be happy (preferably together but that's more of just a deep want than a need). I came for the yuribait, but stuck around for the yuribait and the god-tier plot.