The Heavenly Ninja Party was comprised of twenty-one ninjas from the village. Despite the instructors of the village telling the ninjas that any kind of brotherly bond is prohibited, and that if they were to encounter each other post-graduation, they were to kill each other, the ninjas of different graduating classes decided to band together, defying those previous orders The Heavenly Ninja Party was formed due to these ninjas sharing similar beliefs to form an elite assassination squad