Genshin Impact: I Fabricated Videos from the Future

I transmigrated to Teyvat, a world where the elements reign supreme, only to find myself an unremarkable, ordinary long-lived being. I just happen to live a little longer than most. I scrape by until after the Archon War, when the story reaches the arrival of the blond-haired, bratty Lumine. Fortunately, that’s when I get a cheat ability. All I have to do is make up a fake backstory for myself, and the powers I claim to have become real. I make up a story about having power to rival the gods. Once everyone believes it, I naturally gain power on par with the Seven Archons. I make up a story about saving people from tragedy in the future. Once everyone believes I’m their savior, that’s exactly what I become. The author wants to resolve all the heartbreaking plot points in the game.