She is a princess from another world who was reborn in the 21st century. He is a cold and strong doctor, but he is also her cousin. When two people with different ideas live under the same roof, there will inevitably be chaos. And her sister actually has multiple lovers. Isn't this the 21st century? When one day in the future, she was finally trained to become a little woman, she couldn't help but leave a ring of finger marks on her proud husband.