>>37272363Japan doesn't have fair use laws, anon (and even then their protection of streaming is dubious). The owner of the copy right does own footage of their product and can pursue you for damages if you try to monetize that footage. Monetizing footage is how cover makes the overwhelming majority of its revenue.
What's even worse: youtube is not an arbiter of copyright. They follow the caustic DMCA, which means that if someone makes a claim, however fraudulent against content on their platform, youtube has to act or face liability no questions asked. If Nintendo made a claim against a cover channel, it would be on Cover to dispute the claim in court, pursuing an expensive legal process just to protect their right to monetize other people's intellectual property. Japan's anti-SLAPP legislation is virtually non-existent, there's no real protection against a bigger company dragging you to court indefinitely on frivolous grounds in order to drain your company coffers on legal fees. It's one of the things that allows Japanese conglomerates to maintain near-complete monopoly over their market despite their glaring ineptitude and allergy to growth, and its why little players like Cover have to tiptoe around everything.
Nijisanji is owned by Sony, which allows them to flout copyright laws because they're every bit as capable of SLAPPing a company that goes after NijisanjiThis post is not legal advice.