Board Thread:Questions and Answers/@comment-2605:6000:5547:6E00:A04C:91B:A43D:AFDE-20190615050959/@comment-27950421-20190616150419

What AngryLance said. Also, the rate that mamono can be impregnated is also much lower than a human, so while a man will have ridiculous amounts of sex with a mamono, he isn't going to end up with many more children than he would having a normal amount of sex with a human woman.

I think the conception rate vaties depending on the species, rarer high powered mamono, like a dragon would have a rather low conception rate, while weaker more common place mamono like goblins would have a much higher conception rate.