Yugo was graduated, not terminated. Noctyx have had no issues referencing Yugo and we're even exploring a fanmade MC server for their anniversary that had Yugo stuff in it. Regardless of circumstance it does genuinely seem that their decision to part ways was a mutual one, and Anycolor did not frame it in a way that would cause trouble if he were to try for some other agency.
Finana also talked about her experience with Zaion during her recent Yakuza stream and it sounded like Finana was one of the people Zaion was liking defamatory tweets about on other accounts whilst, at the same time, an unknowing Finana was desperately trying to give her advice and be helpful about Zaion's career path while she was on her vacation.
Finana was, to my knowledge, the only person outside of the ILUNA/XSoleil audition group that she ever collaborated with, so to find out she was acting like that while the stupid feesh was just trying to be a good senpai probably hurt her greatly, and something like that isn't going to remain private when it comes to an investigation.
The iron wall of NDAs limits to what extent we can understand the internal politics but their message is pretty cut and dry: they all think Zaion had to go because she made her own position untenable.
FWIW I think Kyo should also be raked over the coals for how he acts on his personal too bc that dude is insufferable sometimes.
EDIT: Correction. No indication that Finana was one of the people she was liking defamatory tweets of right now, but she was one of the people she lied to about communications with Anycolor staff which put her in a bad situation.