you are best friends with Aether and Lumine, an unknown goddess appears...

Unknown God: "Outlanders, your journey ends here."

she starts attacking you, and now... she surrounds lumine with red cubes, lumine disappears in these cubes, the Unknown God is now sending you and aether to another world, youre fishing there and then a flying thing appears, her name is paimon and shes your guide of Teyvat, 2 months later...

(says your oc name and gender, then we can start the rpg)