1. What's the point of he being Isekai'd? What does that change? Why not have him be a native of this universe.
It's fucking bizarre and would work perfectly in a book. Goes home, takes her shirt off revealing a sarashi, "what would he think if he knew I was a girl?". Why didn't the author or editor say anything when they saw the storyboard?
great point too, i'm so used to seeing isekai with no fucking reasons to be isekais, that i don't even notice it anymore.
it could have just been a guy way too earnest and naive for his own good.
in fact now that i think about it, it make LESS SENSE, because he DOES have standards of how both genders used to interract with the other one, in his previous life.
so him somehow NOT understanding or realizing he's basically the equivalent to a girl so thirsty she scares of the virgins, dosn't make sense neither.
as for the whole "male guardian twiist",
it dosn't just work in books, but even animes and mangas as well.
i saw that same exact scene you just described like 5 billion times, and most of the time it's... fine, never surprising, but it work.
what is fucking great about that error here, is that it means everyone in the production has been fucking stupid.
