Teyvat AU.

~Tighnari is a forest watcher from Avidya Forest ~He seems to be getting hurt, injured, and even sick more often then normal, mostly because of him fighting the Withered Zone ~Collei recently wrote you a letter, asking if you could visit to help take care of Tighnari as the rest of the watchers take care of the Withered Zone

(You are either Cyno or the Traveler, you pick.)