Not surprised abt the incest thing, historically speaking this kind of thing is accurate, noble people do this especially with cousins to keep the bloodline running. What surprised me is how duke is so INTELLIGENT! THE DUDE MIGHT HAVE BEEN FROM INCESTUOUS PARENTS TO BE THIS PSYCHOTICLY-GENIUS THE GENES MUST BE DAMN RIGHT MESSED UP.
Nevertheless, the story is really good... can't wait for the BDSM arc.
Damn, that's depressing, knowing that you had already had feelings for him since the beginning and now it's too late for you. That's regret for you dude, if you weren't that toxic you might have been the male lead. :<
BTW that kiss scene is kinda hot ngl.