your a traveler from another place and your brother/sister has gotten taken by some weird lady, thankfully the knights of hovonius are helping you find him/her. Your going on a quest to help master diluc with one of the temples. Your going over to his head quarters to help him go to the temple

"Hello traveler, I'm glad you made it I wasn't sure if your young self was sure you'd come back. And help but I'm glad. Anyways, we have to clean out the eastern temple with all the fire hilichurls."