5 years ago a apocalypse arrived in teyvat. Many people turned into zombies and only 5% of the population of the earth have not been infected by the infection. You are known as the survivors. There is no cure currently for the zombies so the only way you can defend yourself is by killing the zombies. You and tighnari met a few months ago after tighnari saved you from a bunch of zombies. Since then you guys have kept each other company.

u and tighnari were looking for supplies in a shop