Saizo Kirigakure 霧隠才蔵

The protagonist, an Iga Ninja known by the name of Marishi-ten, Saizo makes his living as an assassin. Though he possesses masterful skill, he distrusts the loyalty relationship between lord and vassal, so he doesn't serve any lord. His weapons are a large kunai called "Mari-Blade" and a smaller kunai. He also hates Koga ninja.