I’ve always had the same question too…
I always think abt this cause usually when they have sex afterwards I never see a stomach scar
Ok, i'll answer, but know that i can't unanswer it.
Usually they come out the ass, but the ass isn't a normal ass, it's an ass that's almost like a vagina (it opens like one for birth purposes).
Through the omegaverse I’ve read that they’re usually intersex (specifically in fanfic) when it comes to manga and manhwa I’ve only ever seen c-sections
You can fit a raccoon up yer arsehole (apparently)
One time, I went down a rabbit hole of mpreg biology (?) and basically you can just view men who give birth in mpreg stories as intersex with female insides but a male exterior. Depending on the author, the baby comes out through C-section or the butt. I think I read one where a second hole magically appears during the birth and magically disappears after lol. But if it's a butt birth, it's similar to birds which have a cloaca that has both egg lay and pooping functions.
I believe intersex is the case with most Mpreg in Love is an Illusion and since Hyesung gave birth naturally I would assume it’s most likely out of his ass since whenever he and Dojin have sex we can’t see another hole
Ik this is fake, but they're supposed to be humans and men don't have vaginas like women. So does the baby come out the ass or does every uke in mpreg go through c-section...??