Kep1er 케플러 | 제이세라(J - Cera) - 언제나 사랑해 (Cover by YESEO)
The Mini Player will repeat your video in a tiny window
It can be re-sized and moved anywhere you want.
We also work on to the only open Browser Extension for Youtube with 80 features for 470,000 people.
WebStore: Youtube Extension
(One of Firefox' recommended 100)