Could the demon king be an omega? And that’s why he hates people looking at his body?

Ohh I love the idea!

It would also explain why he wants to be powerful! Plus, only omegas are born to that family….with the exception of Limon! Which I think was the Goddess’s punishment for not honoring the promise to never marry anyone else when they had her people as marriage partners.

Wait it's starting to make sense! He's a power bottom! He wants to be strong for omegas!