On this episode, a new PE teacher introduced himself. Later, his true nature gets revealed.
So I was a bit surprised when the new teacher's actual nature gets shown and turns out to be the antagonist of the plot. Although it was cool to see the students handle the situation against him along with Tadaomi himself. Besides that, Nagisa's talent for assassination was just awesome. Now what's going to be the next problem that the class will face? Overall, interesting abusive teacher plot.
Conclusion: Interesting abusive teacher plot.