Pretty great episode. This director is really great at adding comedy into scenes like the fight scene. Also a lot of small character details like how Julie is terrified of Rudy and hides behind Zanoba while also headpatting him. Also I like the characterization of how the two beast girls seem to be reformed ex delinquents who are trying to attend school naturally and so initially rebuff Rudeus attempting to fight them.
There's a lot of people in the thread bringing attention to how can the school allow obvious confinement. But maybe it's just all the recent magic school anime like Seven Spellblades, Mashle, and even OG Harry Potter, but magical student going missing and the school being fine with it seems a very common occurrence.