Street Fighter: Champions of the Final Gate
The Yamanote have existed from a time before there was a Japan. Loosely translated it equates to Mountain’s Hand, though they are often referred to simply as “The Hand”. In ancient times the lore that can be found describes them as immortal warriors that were pitted against another race of immortals known as the Chaste. During the time of the Nine clans conception of the hand sign magic was supposedly given to the other clans by the Corax, a race of birdlike demons, however “The Hand” had already been given such magic by an entity that is simply referred to as The Beast. Still in the lore the Yamanote joined the Nine Clans with an understanding of mutual benefits and was instrumental in creating the structure that all of the Clans use today.
In modern times The Hand is considered the most mysterious of the Nine Clans, working toward its own ends rather than serving a function for the whole of the clans. It is because of this that The Hand’s members are often mistrusted even by those of the other Clans. Though none of the other Clans would dare cross the Yamanote as they are considered the most lethal and least forgiving of any Ninja.