The ninja techniques here aren't just flashy, they're genuinely inventive, built on actual clan philosophy that makes each fighter feel like they come from somewhere real. This is where Kurumada figured out how to make hand-to-hand combat feel like magic without breaking the rules. The plot barely holds together, but the fights don't need it to; they're the show.

Hakuo Academy, once a respected school known for martial arts, is in decline as its rival Seishikan pulls away its best students through underhanded means, backed by the Yasha clan. To turn things around, Hakuo seeks help from the Fuma, a ninja clan said to possess superhuman senses and speed, and their leader sends Kojiro to the school. There he faces the Yasha, longtime enemies of his clan, as well as his strongest opponent, Asuka Musashi, who fights for the sake of a younger sister with an incurable illness.