Responses
In chapter 19/20 the butler also says that the father changed
Maybe the og FL has demonic powers, that she used to bewitch them? It was mentioned that there were rumors of a demon in their family in the past.
Like how do you only see your sister. To the point where like you think your sister and wife look similar, you mix up the actions your sister does for what your wife did, and when your sister is in the room she’s the only person you can basically see (other than your dad and brother).
Also FL said that the sister wasn’t like this in the original story, also that the sister is now living her second life and that’s why she knows the future. She has a maid spying on FL (with a knife) looking for blackmail material and her family treats her like a 5 year old. …..math isn’t mathing. Good story so far though.