Responses
Idk.. if these is a spoiler.
Penelope mentioned in the novel that the real daughter was easily able to increase the two brother's interest bar as it was brotherly love. But the goal of the otome is they'll end up with the person who reaches 100% so pretty much kinda incest, if it's not just brotherly love afterall.
Wait, I'm confused...
There's incest in the game?! (⊙…⊙ )