Nooo.... Dwarf grandad.
Maid wants him. Jeanne of arc loli wants him, necromancer dude wants his body.
Well damn. He's popular.
And yeah having kids while in a war of annihilation with other demon lords is a bad idea.
Maybe a little bit after he secures his capital and has layers of defenses ready, before he considers producing an heir.
But hey, can't stop him from trying out probable baby mamas. Magic contraception also would help