>>104554028It's a corporate thing, apparently.
I remember Doki said that a lot of opportunities and companies rejected her due to the termination, which is likely why most of her business connections are in China now instead of Japan, and her Japanese connections are limited almost entirely to a few esports pros, some artists, and Aoi Sakura.
I absolutely would not be surprised if the only reason StarsEN was able to collab with her was because they fought management for the right to support her, and the staff just did not care enough about them to say no, while ID and HoloEN complied. I have a similar theory for kiara and being able to collab with Mint.
