The Kuto was originally a Clan hidden in the world of Naruto. Undisturbed by the war's around them they lived a life of secrecy and peace thanks to their clan's special talent. They did not have Dojutsu like the Uchiha nor were they large like the Hyuga. Instead, they had an innate talent when it came to using the sword. However, nothing lasts forever, and when the Clan is attacked and destroyed one of the sole survivors Rei sets off on the path of revenge with a special weapon like no other by his side.