This song is made by youtuber and music artist LittleVMills and I give him credit for making this awesome song.

Here is a link to his channel and please support him for his talents:
LittleVMills

And here is the link to the Full Song of this opening:
Original Song

I'm a big fan of his work and the moment I heard this song I have imagine how the opening of my fanfic series is going to be.
Litte V, you are awesome and keep inspiring other to keep believing.