I Seem to Be Hated by Everyone, but I’m Actually Everyone’s Favorite

One day, I suddenly awakened and got a System. It told me, “You're the vicious supporting female character in a book, the foil to the kind and beautiful heroine.” In this world, all the major male characters are bound by the “plot,” which tells them they should fall in love with the heroine, their junior sister, and hate me. Yet their genuine feelings keep drawing them toward me against their will, creating intense inner conflict and making them act like they say one thing but mean another. The System reveals the hidden fluttering in these male leads' hearts, beneath their disdainful exteriors, by talking to me. Now, let's follow my daily life cultivating immortality as someone “hated by everyone” who unwittingly becomes “everyone's darling.”