Mo Goes Against the Path of Immortality

I outline a world with pen and ink, and create the protagonist with my hard work. I gave him supreme talent, monstrous luck, and eternal adventures, and I also determined the only ending for him—death. Destiny is determined, and the plot is locked. When I unexpectedly fell into the world I wrote, I realized that the so-called tragic ending was irreversible for him. I am the one who writes the world, but I am also the only one who can save him.