>>16015378Doujins are TECHNICALLY not allowed, and if a company or copyright holder decided to strike an artist, they would easily win.
Fair-use isn't really a thing in Japan after all.
However, most copyright holders are still aware that doujin culture is a huge thing in Japan, and going after artists and doujin would be the most retarded thing you can possibly do.
It'd be both a complete commercial-suicide and PR-suicide.