>>3565962I think it'd be easier for the story if it started way back when Sora debutted. All the memorable clips from gen 0 will get animated from then on to form a story in the alternative world.
Think it like this,
Aqua the maid met Shion the witch and they accidently became friends.
Pekora in her rabbit kingdom met Moona in her human form and became friends.
Subaru was originally a duck and became a human cause of a magical hat.
Noel was on a quest to defeat a dragon and met a dark elf on her journey.
Towa was sent to the surface to bring evil, but found happiness and joy in helping people and singing.
Fubuki, Mio and Ayame are part of a Japanese-style kingdom well known for their animalistic features.
Mori, Rushia and Ollie are well known friends and regarded as Idols among their communities (cult).
Watson and Haachama are siblings and was separated from birth.
All of this, Sora wanted to sing and inspire people. Her songs can bring peace to the world they live in and unite them forming Hololive.