The thing I hate the most about siblings book.

Brothers live together and one fine day they found their lost step sister. Suddenly from the day one itself all those brothers love their sister so much like their life depends on it. She becomes more important than their other brothers with whom they grow up since childhood. Such kind of plot rks me so much. I am not expecting those brothers to hate their step sister. But loving her more than their other siblings is just exaggeration and unrealistic. I know it is fiction. Still these kind of things kind of romanticised so much. Brothers get hailed for loving their step sister more than their other siblings. It might be because most readers self insert themselves in only the sister's place. And the whole concept of treating sister as either mother or daughter is icky. Why can't we have siblings who behave like siblings. In real life no brother will babysit their sister 24*7 by calling her princess and all. Siblings love each other, protect each other but they have their own individuality, opinion differences, their own personal life & they maintain some boundaries. But in wattpad stories, the organic bond is completely absent. Please suggest me some siblings book which doesn't have these cliche things.