Hidden deep within the sacred forest of Mount Koya, Okunoin is Japan’s largest and most revered cemetery, home to over 200,000 tombstones and memorials that line the moss-covered path leading to the mausoleum of Kobo Daishi (Kukai), the founder of Shingon Buddhism. Pilgrims and monks have walked this path for over a thousand years, believing that Kobo Daishi remains in eternal meditation to guide all beings toward enlightenment. Walking through Okunoin is not merely a visit to a cemetery but a spiritual journey through time and faith — where towering cedar trees, flickering lanterns, and soft morning mist evoke a profound sense of tranquility and reverence. At dawn, the forest glows in gentle light, while at night, the illuminated path creates an ethereal atmosphere that feels both solemn and otherworldly.