This was covered slightly with this post on Ironmouse but since then it's escalated quickly:
Kson did a stream saying she hasn't been paid for a year and called up the guy in charge of the Japan side to admit they only paid employers not talents, she was going to leave end of the month but she's gone now and I think she's getting her fellow Japanese talents out too.
Michi just released a video saying she's going too.
Don't have X so can't link it but Melody is gone too, Henya is apparently streaming later today where a lot of people expect her to go too (Edit:Henya's leaving Vshojo video). Think by the end of today, Monarch (Amalee), Haruka, K9Kuro will be gone. Hime might leave when Sydney remembers her password..
And in the backdrop to this we not only have the defrauding a charity with the missing half a milion, Shibuya Kaho has alluded to a vtuber agency that has an employee openly sharing real photos and status of their companies talents, many think this is Vshojo since she is close to Ironmouse. Why is this relevant, because Vshojo is based in San Fransico California and their laws FUCK employers over this kind of thing.
So yep, Vshojo crashes out before Nijisanji, who'd thunk?
Update: here's a good breakdown by False, EVERYONE has left even Hime and Froot. Artists and musicians who were commissioned in the past have come forward to say they were owed money, Kaho pretty much admits she was talking about Vshojo, they might not exist as a company by the end of the week.
I remember buying something from Circuit City, before they were in real financial trouble and just trying to close down a few underperforming stores. Back when there were salespeople. I was kind of young, and was looking at a VCR that had a floor model for quite a bit cheaper. I remember asking the dude "ok, but if there's something wrong with the floor model, I can just return it, right?"
The salesguy didn't deny outright that I could return it, but kept saying in quite a few ways how it might be a good idea to spend the extra on the sealed one, and how it cost less overall than buying the extended warranty and paying for shipping. I thought it was odd he would mention "shipping", since without it, it would be less. The conversation stuck out to me as just strange, because if there was something wrong I would just come back here to return it.
A month or so later I was in the area and noticed that the store was in liquidation and it was only then I realized what he was trying to communicate, and I very much appreciated the wink and nod in warning.
(I wound up buying the floor model, it turned out fine, and I didn't buy the extended warranty either.)
* edit to add: remembering this made me sad for those days. Today, even if they would have salesmen on the floor, they'd pay them minimum fucking wage and they'd probably just keep their mouth shut and laugh about "ripping off that dumb teenager" during break, because we no longer live in the society I grew up in.