The "being introduced to his parents" event is IN THE PLAN, fellas.
Also Ichikawa reluctantly answering "Yamada" to "that super pretty girl" is... Nfff. That must give her a boost.
Kazuya has a cool (?) scar now! Also we're down to a more reasonable amount of pages so maybe the mangaka won't need to take vacations every couple of months.
Ichikawa slowly being brought into Yamada's group of friends sounds like a plan for development that I would be okay with.
Also "A Yamada-ass Yamada episode" is indeed the proper term to use to describe that little story.