Sorry, I reposted it after accidentally deleting it, I'm sorry.
Genshin Impact AU: Aether and Lumine weren't siblings, it would be explained into the later videos... hopefully.
The videos that the characters reacted to was not mine, I repeat, not mine, all credits to their respective original posters. I don't remember who they are, but the videos were theirs. All that said and done, thank you!