"We Will Meet At This Journey's End"

Teyvat is in a time loop. The traveler's connection to Khaenri'ah and the events that happened 500 years ago are replaying over and over again in the Archons' minds as each new traveler, alternating between the twins, comes and saves their nation from the same events forevermore. And every time, they can do nothing to help the traveler's own journey. Innocent people are living a loop of which they do not know exists. The traveler becomes the very thing they swore to save their sibling from. And this history will never reach it's end.