I became the female protagonist instead of my younger sister

One day, I discovered my younger sister had been sucked into a book. As she was sucked into the book, I tried to grab her, but I lost and was sucked in too. I was sucked into an unfamiliar temple. My sister, dressed as a priest, was crying before my eyes. She was only ten years old, and the people inside the temple jeered at her. When she was hit by a rock and injured, I hugged her tightly. At that moment, a light shone from me, healing my sister. The crowd's brief silence turned into cheers. An