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Mpreg. It's a great story

just mpreg!

But it's not mpreg universe, the mc just has unique condition, maybe he's trans. It's very secret and I don't think the story will explain it one day

But it's an Mpreg, if men can get pregnant in their world besides being in an omegaverse, it's considered as mpreg. It's like another story that I read where very few men can get pregnant but are still considered men.

mpreg, uke has a uterus (pls correct me if I'm wrong)

Mpreg. The uke is intersex. Has all the body anatomy of a man but he has an uterus.