And yet the last time Lumi remembered Yoki, she complained about it on Twitter.
Specifically, she was the one in Lumi's Twitch chat when Lumi used her model for an April Fools gag. She acted all happy and friendly, then publicly complained to Phase on Twitter about it shortly after, along with Hylo and Emma.
As far as the Tweets, it's probably related. Plenty of the former girls are doing well for themselves in new corpos (Pandora, Emma, Menace, Chapipi, and of course Lumi). If Hylo is that one Hades vtuber, she's still starting out, but has been given a new chance to possibly grow. I don't know anything about Yoki that doesn't involve Lumi, but looking at her YT, she seems to be doing fine as an indie. Looks like her ASMR videos are really popular....including an "earlicking" ASMR vod that has 67k views(gross) and some ASMR stream from a month ago that has over 200k views on the vod. Not sure what her average CCV looks like, but based on the vod numbers, I'm sure she's comfortably sitting as a 3view.
I'm sure the sad posting is seeing her friends and former Cyberlive co-workers not named Lumi joining new groups, making new friends, and doing new and good things with them, and she's feeling left out. I can understand it, but it can pretty much be chalked up to "woman moment". While I don't wish ill on her, given my biases, I also can't bring myself to care or sympathize, and I'll forget about her shortly after I'm done with this message until the next time she's brought up.
And speaking of the source of all misfortunes upon the former Cyberlive girls, Lumi has escaped her mandated community service of cleaning up NYC, and she's now trying to escape a scary Japanese subway station (she's playing that "horror" game most of the other vtubers have played).