Marvel: The System Tricked Me into Becoming a Mage

(I admit I dragged things out for eleven or twelve chapters in the middle. I’m an idiot, and I’ll revise that section soon.) Li Kai’s soul transmigrates into the body of Kyle, an unnamed bit character in the Marvel Cinematic Universe who doesn’t even appear in the movies. This world is far too dangerous and unforgiving for Kyle. There’s the powerful Ancient One, who can see the future, and the Time Variance Authority, which cares only about maintaining a unified timeline and allows no deviation whatsoever. How can Kyle, an outsider, survive in this world? Even if he avoids affecting the course of the Sacred Timeline, what about the coming battle against Thanos? Betting that he won’t be among the half of humanity wiped out means putting his life in someone else’s hands, and that’s no easy thing, especially when he knows what the future holds. Fortunately, his soul has brought along a self-proclaimed Invincible, Hype-Hype-Hype God Mage System from the Myriad Worlds. What changes will a protagonist who knows the plot, together with a foul-mouthed, stubborn System, bring to this world?