Okunoin (奥の院) is the site of the mausoleum of Kobo Daishi (also known as Kukai), the founder of Shingon Buddhism and one of the most revered persons in the religious history of Japan. Instead of having died, Kobo Daishi is believed to rest in eternal meditation as he awaits Miroku Nyorai (Maihreya), the Buddha of the Future, and provides relief to those who ask for salvation in the meantime. Okunoin is one of the most sacred places in Japan and a popular pilgrimage spot, surrounded by an immense graveyard (the largest in Japan).

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