A lot of fun animation this episode, with Mari imagining what girls' nights are (kinda reminded me of Utena with the silhouette-y figures) and everybody else's wishes for a girls' night (which kind of looked OP-esque in a way? especially with the white borders). The preparation montage was fun too with the flying countdown pages. "Monsties" is kind of a cute translation for obakechan, I will give the translators that one. A "live" at a "festival" with everybody singing together,.. in my Love Live anime?! Also I'm betting that'll tie in into our "kokoro no oto" plotline. The last shot with the stars reflected in Yohane eyes reminds me of so many recent anime, Oshi no Ko and Bishounen Tanteidan for example.
Anyways, a fun episode with nice brisk pacing and it feels like the animators got a chance to play around a bit more. I think it's one of favorite episodes of Genjitsu so far.