On the Compatibility of Genshin Impact and the Crossover World

[Don't click the Kazuha chapter!] [The post-Irodori Festival plot has bugs. When I rewrite it, I'll put the Kazuha chapter on a new page, and gradually replace the original Kazuha chapter with the Xiao chapter.] [Blurb:] The world of crossovers is exhausted. In an age when transmigrate and reborn stories are a dime a dozen, he's seen all kinds of characters. So: It's perfectly normal for a chalk-white artificial human to appear in the Holy Grail War in Fuyuki. It's perfectly normal for a little zombie to show up beside the demon big brother. It's perfectly normal for the red-scarfed boss to welcome his second short underling. The sun blooms bright, blocking the King's Treasury. The Primordial One falls into the Holy Grail. As he falls from a building, the Dance of the Nuo of Subduing Demons begins. The Conqueror of Demons protects the peace. Swords sing, the wind rises, and the leaves return. The wandering samurai keeps the blade for company. Teyvat has received help from other worlds, so it too will send its kindness to other worlds. The author's writing skills are limited. Please expect severe OOC. Theme: The sorrowful present will eventually pass, and the future will embrace love and kindness