>>86069895In Niji's defense, they'd have to sue in either the US (Mint and Sayu) or Canada (Doki and Matara) - and unlike Japan, both the US and Canada allow truth as an absolute defense against defamation claims. Also none of them except Sayu have ever mentioned Nijisanji or Anycolor by name, so AC would have to prove that any of the other three were talking about their time at Niji and not their time at any other previous employer.
Oh, and the Discovery process. I can't imagine that AC is in any particular hurry to make their receipts part of the public record. Especially if they tried to scrub their receipts, but the court asks Discord/Slack/etc. for a copy.
Between all of that and the inherent difficulty of international lawsuits, there's no real surprise why AC isn't suing any of them.
....oh, and they haven't gone after the JP ex-members who described Niji as "prison".