Supernova release the remix version of "Kimi Dake Wo Zutto"
"Kimi Dake Wo Zutto" is their 1st Japanese single, released on 9th September 2009.
The remix version is included on the normal edition of their best album "Supernova Best"
Check out the remix version here
And also for those who haven't heard the original version, you can check it out here
Credit : Universal Music Japan + uploader