>>55489819The actual reason for lore is JUST because your vtuber design needs to be distinctive and stick in the viewer's mind. The eye is drawn to all the catchy details that evoke tried-and-true comfortable fantasy tropes, whether it be armor, lace, some eldritch book - all that serves to make the character memorable and look interesting.
When people get hooked on that interestingness, they naturally start to dig deeper, they need it to MEAN something. Why is she wearing a crown? Why is she holding a magnifying glass? And then you need at least a paper-thin scrap of lore to answer that. If you have absolutely nothing and it's obvious, then all that finery suddenly becomes kitsch, like jewelry made of gold foil - no faster way to make your vtuber look worthless and cheap. But if you have just the bare minimum, then people can go away satisfied with the impression they've learnt something substantial enough to talk about it with their peers and be Informed, even though it was barely anything at all.
On the other hand, if you have too much lore, then it bogs down everything. Just like the problems Marvel, DC comics, WH40K, Star Wars, or any long-running franchise have, it reaches a point where people feel obligated to learn everything because of FOMO. Sure, you could jump in at any point without any background and get most of the experience, but no one wants to be the only one who didn't get a reference. People rather get 100% or get nothing at all, but at the same time there's only so much effort they're willing to put in for that. For vtubers, at that, that limit would be insanely low. Normalfags won't even know where to go to know anything and the nerds won't like the fact that they can't theorycraft anything deeper than a puddle and have it pay off - unless you pander to that, in which case you can DEFINITELY say goodbye to most of your casual audience as you play out part 38 of your long-spanning kayfabe storyline comprising twenty of your vtubers, half of which they have never even heard of.