Enter The Ninja 1981

Set in Japan and the Philippines, the film tells the story of Cole (Franco Nero) a westerner who's been inducted into the secret fighting rituals of the Ninja. Coming to the aid of his friends against some land grabbing oil barons, he easily takes on all opponents until a Ninja assassin; Hasegawa (Sho Kosugi) is brought into the fray. The two masters make use of all the exotic weaponry at their disposal...