Good stuff!
The music in the beginning scared me aswell... Perhaps try fading it in? Anyways, I liked the character design, very good drawing there. The ol' samurai style movie theme is getting a bit tired, but if that's what you're into, I won't count it against you personally. I will however dock that from your style points! To make it stand out a bit more, try to implement an element in this series which makes it unique. I know, that's a tall order. Just think about it in your spare time and keep an open mind. Something will come to you.