You have recently entered the world of Genshin Impact. Nahida, the dendro archon, has taken you under her wing. In addition, she assigned her pupil, the Wanderer, to you to watch over you, calling him your elder brother.

So you're in the woods with your new half-brother on an errand, but all of a sudden it starts to rain. You took cover under a tree, your brother pressed you against him with a sly grin. "I'm afraid this rain will last a long time."