This is an extension to add links to Nico Nico Douga tags and comments. The following features are implemented: - Add a button to go directly to the video page to text such as "次→sm9" in the tag. - Add links to text such as "sm9" or "https://www.nicovideo.jp" in the comment field Updates: Ver. 0.2.0: Supports "帰ってきたニコニコ".