Protagonist Plot Swap? Not a Big Problem

The story is about saving the world from being invaded by cosmic creatures through video editing. The protagonists of the daily series all shine in the video (physics): Yuta Togashi: "If fighting is a mistake, then I will bear it. I have no dreams, but I can destroy other people's dreams and transform!" Hikigaya Hachiman: "Dragon-Zlayermon, please accompany me for the final transformation. After all, I spent my youth with the Dragon Emperor. It's just a Lucemon, let me crawl!" Furumi Glass: "Do you believe in Blue Eyes? I especially admire the first player to use Blue Eyes, because he might be killed by Exodia... Made in Blue Eswat Doragon!" ……………… Many years later, the invading army arrived. Looking at the gods and ghosts all over the world, it seemed that they had come to the wrong place.