Best guess is that we're here speculating like thirsty mofos but nothing is happening since the ages of her career about that
I mean, imagine she called it nudes, without actually showing some pussy, people would go insane and call her a scam
They used to run a joint subreddit and discord several years ago, and did a lot of cosplay collabs, until one day Yuzu said that she was just kicked from discord and that Miko wouldn't talk to her anymore. Some bad blood definitely happen, but they kept it internal. There were several rumors circulating, claiming to be the reason for their falling out, none of them sounded very credible or even founded in reality.