Shinobi No Mono 8

Towards the end of the Tenmon Era, Shogun Ashikaga`s powers were weakening by the day and many were there who planned to overthrow him. It was the beginning of the Sengoku (Warring States) period. As the movie begins, Kasumi Kanbei is testing his gunpowder in a small house when he senses men approaching. He hides his son Kojiro and the gunpowder. As the men enter, he kills two and fights the rest. One of the attackers cuts off Kanbei`s arm with a kusarigama (sickle and chain weapon). (shinobinomono.oninohana.com)