Bushido Blade synopsis

It is said that deep inside the Southern mountains of Japan lies an ancient dojo called the Meikyokan that practices the secret teachings of the Narukagami Shinto. It is also said that within the Meikyokan there exists a secret society of assasins called the Kage. Each Kage pledges loyaly and secrecy... upon penalty of death. Of course, this is all a myth, for no Kage as ever left the dojo... Until one day when one escaped.