We do not allow our users to upload or disseminate someone else's copyrighted work on Niconico. Copyright infringement can lead to serious legal consequences. Willful copyright infringement can result in criminal penalties and fines. Violations found on Niconico can be reported by any users.

[Examples]

• Creating and uploading videos that contain copyright-protected materials like TV programs, DVDs, and music.
• Uploading videos that expose someone’s personal information like names, addresses, and phone numbers.

[Our Guidelines]
Please read our guidelines before uploading videos or going live streams on Niconico.*These guidelines apply to every Niconico service.
 

• Video Upload Rules & Regulations
  https://site.nicovideo.jp/video/terms/infringement/en-us/index.html
• Niconico Live Gudrelines (Japanese)
  https://site.live.nicovideo.jp/help/guideline.pdf