How Did It Originate?

Is there such a pair of sisters? Their backgrounds are completely different, their personalities and habits are completely different, and their appearance is also different, but they have become the closest people in the world. When the elder sister fights hard for her childhood sweetheart, where should the younger sister's love go, and where should she go to find the prince charming who picked up the pair of glass slippers? Will the prince be able to find the injuries on the soles of his feet through those beautiful shoes?