Mieido, known as the memorial hall of Kobo Daishi (Kukai), is one of the most important buildings in Toji Temple. The Mieido, also called Daishi-do, is the place where Kukai is believed to have entered (not died, but is said to be in a state of eternal meditation) and is the focus of much devotion. Inside this hall is a precious space where a seated statue of Kukai is enshrined and visitors can pray directly in front of it. The Mieido dates back to the 9th century, when Kukai spread Shingon esoteric Buddhism. Kukai himself based himself at Toji Temple and laid the foundation for esoteric Buddhism in Japan, giving the site a particularly deep spiritual and historical significance. The Mieido was built as a place of respect and devotion to Kukai, but it has been lost repeatedly to disasters and warfare, and has been rebuilt each time. The present Mieido was rebuilt in 1634, in the early Edo period, with the support of Tokugawa Iemitsu. This reconstruction made the Mikado more robust and magnificent, and it has served as a center for welcoming many worshippers.