Y/n was Lumine’s companion along with Pailin since Y/n also wasn’t from this world, hell, probably not even from the same universe. Y/n and Durin were walking in through a forest in Mondstadt when they saw a monster (it doesn’t matter which one). Y/n had somehow obtained a Cryo vision and was super strong but they didn’t really use the Cryo vision. Durin liked Y/n more than just a friend.