Kaikouji Temple is a temple located in Sakata City, Yamagata Prefecture, and there are six self-mummified monks in the Shonai region. Two of them are enshrined in the Jukubutsudo Hall at Kaikouji Temple. Interestingly, Kaikouji Temple is the only temple in the country that enshrines two self-mummified monks, making it a very rare existence nationwide. Self-mummified monks are Buddhist statues that are believed to remain in a state where their bodies do not decay even after death as a result of their training, and are objects of faith. At Kaikouji Temple, you can see these self-mummified monks. In addition, Kaikouji Temple is a temple of the Shingon sect, and it is said to have been founded by the founder, Kukai. From the fact that two self-mummified monks are enshrined in one temple and its historical background, Kaikouji Temple is widely known as a special existence!