You know, I too would be all for abandoning them like most in these comments, but considering the current situation in the story that would be a horrible idea.
Correct me if I'm remembering incorrectly, but these monster parades basically go on a rampage all the way to the outside of the dungeon...
On one hand I feel like this is unnecessary fanservice and on the other hand I feel this is kinda realistic?
Like being isekaied doesn't exactly automatically delete sexual urges (lest you're a dense harem MC)
And it's not like he/she has anything better to do... Like it's a way to make time...
Once again our non-japanese MC brings up the example of japan, for probably no other reason other than it's the only country the author is probably familiar with.
Kinda frustrating tbh, like don't bother being original in having your isekai MC not be japanese for once if you're not gonna bother...
Literally the only reason I can think of why these protagonists in isekai would know to implement rotation farming is because they read about it in one of the 5000 other isekais that use it.