[Iron + Original, two protagonists: Stelle and Lumine, no romance, not a “dual female lead” story]
I'm Lumine, a Traveler in Teyvat, searching for my brother, with Paimon as my travel companion.
My name is Stelle. I'm a Trailblazer aboard the Astral Express. I don't know where I came from, but I have a family by my side.
It was nice to meet you. So...
Why do they swap bodies every time they fight monsters?
Stelle got the big-shot script, while Lumine got the everyone-loves-her script.