Really really good !
The animations are very fluid, which is rather rare, the drawings are really good too, the colorings are a bit messy sometimes, but oh well, I can't blame you at all !!
You've done a good choice on the music too, it's very dynamic, and the movements fit with the tempo.
The plot is also very interesting, I come to wonder, (and I think that's what you meant) if none of the God-King's kids would have "betrayed" him if he didn't kill them all !
Well anyhoo, I say that it was worth working a year, 'cause it's really well done !
I give you a 10/10 and a 5/5, because you deserve it =D
Have a good day n_n