User blog comment:Japsters 714/Species.../@comment-5173028-20130620153805

I smell gold...errrr golden brown sugar coated donuts ;p

Before I throw a random thought I may implement myself... I do believe Alice only said that the only males that were ever born (which is rare in the first place) from monsters were human so these half-blood humans could technically be hybrids much like the elephant example someone gave below.

Assuming humans here are homo sapien we could assume the monsters here all are homo but individually are all different species but share the same genus?

Of course we could always believe male monsters exist (or existed as I'm going to go here in a bit) but human semen doesn't have the same off-spring result as monster semen. Where human semen tends to give birth to either monster girls or human males with a larger ratio to monster girls, where maybe monster males give a more even ratio of monster female or male.

Of course the disappearance (or rarity of monster males) would be a whole different debate like maybe monster males preferred to attack human females even though their semen could not [or rarely] inseminate them (or instead only give birth to half-blood human females?)

But here is what I'm thinking as a cool idea XD

Who knows if we can amuse ourselves with a little fantasy here maybe just like Promestein wandered around disguised as a human. Maybe the Ilias sent out high ranking angels into covert operations to eliminate male monsters since they pose a larger threat than female monsters?