Kumo Tsurugi Kuchiyose no Jutsu is a technique of the Sky Release utilized by the Kyuuten Clan. It is the sacred weapon summoning technique of the clan and is only known by high-ranking members of the clan. After doing the correct summoning methods the user can summon the sacred weapon of the clan to their side, a sword made from the sky above by the first Kyuuten. There is only one sword of the Kyuuten in existence therefore it can only be summoned by one member of the clan at a time.
Sky Release - Kumo Tsurugui Kuchiyose no Jutsu
Sky Release - Kuchiyose no Jutsu Sacred Cloud Sword Summoning