Not sure if anyone knows what im talking about but im looking for a toxic somewhat historical bl where the bottom has a leg injury and the top is the master of the house and thinks the bottom is cheating and locks him up. I vividly remember a scene about a painting of the ocean and the fact that the mc was illiterate

Also trying to find a historical bl where the uke is a sowrdsman of sorts ans the top is a royal who's not human the art kinda reminds me of steel under silk