Ummm... Well you can draw?
I'm sorry to say, but this isn't that fantastic.. The drawings are good; however, that is all it has going for it... I was waiting for some sort of story to come along the whole time... About halfway through I realized there wouldn't be any, it was a bit disappointing, and having taken a look at the site, the redlemon series looks like it's just going to be a tool for you to promote your music, and I disapprove.
I'm sure you noticed my violence rating wasn't that high either, yea stuff got sliced and there was blood..but nothing was that fantastic.. the most gorey thing was when he sliced the one in half vertically and you could see it's insides.. Besides the attack at the end to kill the leader, most of the main character's attacks were REALLY boring to watch.. This is also not to mention that I found some problems with your animation quality.. Things looked impressive at first..until he picked up his guitar and slung it behind his back.. I cringed at that part...
As for the guy above that said this was original.... Not really in any respect, the thing that made me laugh the most was how you said the guitar specifically.. I guess you've never watched Furi Kuri, have you? Not only that, but your design for the main character was a carbon copy of Spike Spiegel. Plus the whole main character saving the girl seems a bit cliche to me..