A Crossover Anime/game Where Starting It is Like Having a Cheat Code?

Cold, shivering... He opened his eyes, staring at the train moving before him and the roaring monsters outside. Lin Shi, who initially thought he'd just transmigrated into a slice-of-life anime world, was somewhat unable to hold back. Luckily, as a transmigrator, he had a built-in cheat code! This isn't random—wait, why is the game starting to display garbled text? (...An infinite flow anime crossover, but the player is a two-dimensional character!)