Kirigakure was founded by the First Mizukage. At some point, following a meeting between the five founding Kage, the First Hokage distributed the tailed beasts to the Five Great Shinobi Countries as peace offerings to ensure balance amongst the nations. At a latter point in the past due to great enmity between the Second Mizukage and the Second Tsuchikage, the two men eventually killed each other in a final confrontation. During the Third Shinobi World War, Kirigakure captured Rin Nohara and made her the jinchūriki of Isobu, hoping to use her to destroy Konohagakure. They allowed Kakashi Hatake to retrieve Rin and sent jōnin and Anbu pursuing them, so they would get to Konoha as fast as possible, where the beast would be released on the village. This however failed as Rin willingly let her