There was a straight manhwa where th fl married the ml's father. It was set in historical period, mahbe there were other children of the father too. So the fl is very young but the father is old and had multiple wives before but they were all dead. The ml was always telling the fl to go away which mader her think that hw hates her. Later we found out that actually the whole family sacrificed their women before and even ml knew this. They kind of had abilities like vampire maybe as far as i remember. I'm not sure if it's completed but probably is because last thing i remember they're trying to run away.
There was a straight manhwa where th fl married the ml's father. It was set in historical period, mahbe there were other children of the father too. So the fl is very young but the father is old and had multiple wives before but they were all dead. The ml was always telling the fl to go away which mader her think that hw hates her. Later we found out that actually the whole family sacrificed their women before and even ml knew this. They kind of had abilities like vampire maybe as far as i remember. I'm not sure if it's completed but probably is because last thing i remember they're trying to run away.