he has a wife, a dragon loli who only wants food not his body , Goblin/orc subjects, and demon students, nope i don't see a halem i see a diverse community working together for a normal peaceful life
What the king and hero party fail to comprehend is if they do succeed in hurting Cecilia god forbid killing her Oliver will become a one man army Demon king and destroy all them
the incest is the reason i can forgive the age difference that and it looks like it might only be like a five year age difference but if not she's at least mentally the right age( ̄へ ̄)that and the alternative is a piece of crap
for one it's a twin sister granted that's not unheard of and second they didn't just steal money left by the parents she the one who made the house prosper
SHE'S A THOT!