Aekuni Shrine is the 1st shrine of Iga located in Iga, Mie Prefecture. It was established in 658. This shrine was used to be the meeting place for all heads of Iga Ninja. The Kuroshozoku, the black ninja suits, was used to be the festival custume that only Hattori Family can wear. The festival is called Kurodon Matsuri, the black group festival.