Makes sense but honestly her growing out of putting a facade be a character development for her?When she gets comfortable enough with the mc and other stuff and things the point of facade becomes null.One doesn't need to put facades with people they love and are comfortable with.Also I am not saying it needs to happen immediately but shouldn't that be MC's goal lol not just clapping cheeks but also helping his sister so she doesn't need to put a facade atleast with him and the family.Also not saying that she would become an airhead lol she seems decently serious enough anyways but being serious doesn't exempt one from being lovable lol