It shows RatingBars which represents Like/Dislike Rating ratio.
当前为
※After Nov 8th 2019, it exceeds YouTube API quota limit and be not available to get rating data near 0:00 WST on everyday
for more information about the problem:
https://greasyfork.org/ja/forum/discussion/66193/x
It works on the top page, search results, video watching and channel pages, etc.
If a video has less than 10 rating votes, an appended bar is thinner.
How to install user scripts:
https://greasyfork.org/ja/help/installing-user-scripts
