Board Thread:General Discussion/@comment-45912997-20200713230939/@comment-28776596-20200730205905

Well then, they invade another world.

Remember, every time when a Mamono have sex, the demon lord become more stronger. If she managed to turned the whole human race into Mamono and incubus.

The demon lord is probably a deity higher than god. More likely can help Mamono give birth to incubus.

Even is that plan fails, she can always invade another world like ours.

Also let’s not forget, an incubus is partially immortal so they can’t die of old age.