does anyone know the title of the bl fantasy wherein there's this blond/yellow-ish haired ...

does anyone know the title of the bl fantasy wherein there's this blond/yellow-ish haired uke and a black haired seme and the uke doesn't know that seme is a demon or wtv entity he is. There was a scene where seme had one of the maids (red hair i think) watch them fuck but as soon as the maid walked out of the door she forgot everything

I already tried looking for this b4 but I gave up lol