Fate/Genshin : Genshin Impact x FGO crossover

A Rayshift goes wrong and sends Servants tumbling into the world of Teyvat. A teleport goes wrong and sends vision-wielders into Chaldea via the Grail System. That's how the two worlds first met. And it wouldn't be the end. This is a collection of stories where characters get sent across worlds. Lumine is the active twin. Gudako and Gudao are the same person and, just like in-game, can switch on will. Listed as Female lead bc Lumine is active twin and Gudako is the defaulted one. Due to some complications, this fanfic's updates have been moved! I may add them here in the future though.