After awakening the space, I married the cold-faced handsome guy

She had just been brought to the city by her father, and after a few days of comfortable living, she encountered a disaster. Her stepbrother pushed her down the stairs, causing her to hit her head hard on the ground. While she was unconscious, a person claiming to be a time traveler attempted to possess her body. After a fierce battle, she successfully defeated the time traveler and, in a stroke of luck, gained not only her memories but also a small, 30-square-meter space. Through these memories, she learned that the world she lived in was actually a book. Her cruel father had brought her to the city so that she could replace her stepsister and go to the countryside...