Which manga pls

So it's a black n white manga where the uke and seme r playful in childhood n uke is blonde while seme is dark haired. A fire separates them n ruins the ukes fam n life wherein he doesn't understand shit but is made to be at an assh*les beck-and-call and he's just a kid turned adult n that's the first thing he's been taught yet he doesn't understand it n seme later rescues him n makes him understand about consent. The ukes fam was rich smth n it was set in mediaeval period ig.

There's a side couple with a dark skin hot arab and a strong badass guard uke.