Musashi is the cream of the crop for a band of mercenaries, often embarking on solo missions and keeping his whereabouts unknown. Nobody knows his true identity or history, but as long as the price up to his expectation, he will be yours to command.
Musashi is not only an expert at kendo, but also highly adept at the use of firearms. But his most prized ability is that of ninjutsu, which he acquired while on one of his missions.
A few years back, Musashi received a secret request to kill a prominent Master of a reclusive tantric sect and obtain a sacred scroll. He disguised himself as a member of the sect but while he was in there, he fell in love with a fellow sect member, Kurenai. She too, has feelings for Musashi.
However, all was not to last, Kurenai witnessed "Musashi" killing her beloved Master and stealing the revered scroll. Consumed by rage, she went all out to try and kill Musashi. Musashi had no choice but to temporarily go into hiding.
After some investigation, he found that all these had something to do with Night Blade. At the same time, Kurenai is hot on his trail, bent on taking revenge...