A novel by Naoko Takeuchi
Times are tough in the summer of 1787: famine, disease, renegade gangs, rumors of cannibalism. But that's nothing compared to what's in store if the Dark Kingdom has its way. Classy Ninja priestess Nakoruru teams up with a pair of blade-masters to try to circumvent a supernatural conspiracy to rekindle civil war in Japan. Here's a good example of the ever-popular Japanese comic style known as Manga, and this fat book is packed with sorcerers, occult warriors, a demonic overlord, and a creepy nethership, plus all kinds of sword-swooshing action.
Used availability for Naoko Takeuchi's Samurai Showdown