N-no! They're just called Kishin eggs! They aren't actually... like, eggs... laid by witches. Or any kind of "young." [He's trying to avoid any cultural faux pas, but really... what are trolls and how do they work???]

Kishin eggs are what happens when bad people eat souls. They turn into monsters. I think they're called eggs because if they keep eating souls, they turn into whatever a Kishin is. And that's really bad.