While being abused by my father under the guise of an experiment, I recalled the memories of my previous life. This was when I realized that I was living in the world of a fantasy novel. I was born as a minor character who died before the novel had even begun. Ariadne thought calmy, I'm ruined. On a very global level. The ending of the 10-volume novel had a bad ending. It was the failure of the protagonist that led to the destruction of the world. "If the main character appears, the bad ending will be the ultimate fate. What kind of novel am I in?" In order to change the ending, I have to save the world. By saving the novel's protagonist, and the ones who are close to me. But there was one person who I needed to save first. "Please take me in, grandfather!"