Well anbu-girl i don't know much about it but i know some. here's what i know:
It's not anime or manga it's manwa (chinese manga) and it's a very early work of Andy Seto. I don't know his official website so i'm sorry but i can't help u anymore. I hope that what i said helped though.


Kenjutsu is an art of killing, no matter what fancy words you use to describe it, such is it's true nature.
-Me to my baka student Kenshin-