This is more of a rant so scroll along if to ignore my nonsense.
Thank you for the translations
Fuck this MC......
Im grateful for the translations, it just i so tired of this character archetype in manga. They used the fanservice and the MC's uncomfortability with women as comedy and like many tropes, its been done to death.
I dislike that the most reasons for the fanservice is only to show the reaction of the MC, and its the same "oh no a woman who's got a sexy figure, i cant handle it or ill start feeling something."
In his instance, you cant argue prepubesence because he's a reincarnated grown man. Im not expecting him to dive headfirst into boobs, but just sorta acknowledge the differences between your world and the isekai. Plus, these aren't even humans, you shouldn't be trying to apply old world rational to them.
Again, just ranting here.