...This is perhaps one of the worst characters to imply is going to be a recurring member of the cast (the annoying ikemen dude with the crush). He doesn't have any redeeming characteristics that would make him less annoying (like Kuno from Ranma 1/2, who at least was innocently earnest to the point of being silly comic relief).
I really want to like this manga and hope it does well, but these chapters really suffer from poor pacing and editor guidance. Too much time is spent on short little scenes that could have been resolved in less than a chapter. This "prove the monster girls are b0rken STRONK" mini-arc could have been wrapped up last chapter if it were more concise and focused.
We still barely have touched on the actual plotline with an isekai'd Sensei and the girls' roles in this society that this manga is supposed to be about and we're at chapter 8. All we've mostly seen is that everybody save the MC and girls are stupidly petty and shallow.
Call me cynical but it seems they're leaning too heavily onto relying on good art and cute girls, but not on deeper characterization or moving the story along. I hope I'm wrong and this turns around in upcoming chapters.