Nijisanji literally has it in the guidelines they can do whatever the fuck they want with your fanart, including turning it into merchandise without even asking you.
- At the point in time that you publicize the Contents derivative works, then you will be deemed to have given approval regarding our Company and a third party designated by our Company to use the derivative works pursuant to the methods set forth below:
(1) Use on live transmissions and SNS, etc. (also, there may be instances of carrying out trimmings or deformations, etc. of a degree that does not damage the identity of the product).
(2) Carrying out official distribution or turning into goods (also, upon carrying out turning into goods, we would like to hold consultations in advance).
I don't know what Selen is smoking thinking it had to be added specifically for the contest (or why people are outraged it's a thing), when it's literally in the rules to begin with. No, you don't own the rights to a piece of drawing of a copyrighted property, they allow you to do it and make money on it because it's good publicity for them and to foster a community, and because it doesn't hurt them financially so why bother. They later have a specific part relative to sales, that if Anycolor deems the volume of your production to be on a business scale, then they will put cease and desist order. So they are only cool with selling goods and doujins in small avenues.
For the record, the only difference with Hololive is they can't start selling your fanart. The rest all very much applies
This page is ANYCOLOR - Guidelines for Secondary Creation.
event.nijisanji.app
The official website of hololive production, a VTuber agency that consists of the talent groups hololive and HOLOSTARS. This page features our Derivative Works Guidelines.
hololivepro.com