MOUNT HIEI, Japan -- A 31-year-old Tendai Buddhist monk has withdrawn from worldly life for twelve years, entering the Jūninen rōzan-gyō (十二年籠山行), the “twelve years of mountain-seclusion practice”, at the sacred Jodo-in hall on Mount Hiei, northeast of Kyoto. Sogaku Taguchi, chief monk of Nanzambo Temple, began the practice on September 11, 2026, and will not emerge until the same date in 2038.

Taguchi is undertaking one of the most demanding ascetic disciplines in Japanese Buddhism. During this period, he will serve as a jishin, (侍真, true watcher), tending to the mausoleum of Saichō (最澄, 767–822), the founder of the Tendai sect. According to Enryakuji Temple officials, he is the 118th jishin since records began in 1699, and only the eighth since the end of World War II. The rarity of this undertaking underscores its gravity.

A Commitment to Sustained Practice

The Jūninen rōzan-gyō is associated with Saichō’s vision for training Tendai bodhisattva monks on Mount Hiei. The central commitment is to remain within a designated mountain training setting for twelve years, devoting oneself to Buddhist discipline rather than ordinary worldly pursuits. Extended study and practice are intended to cultivate people capable of serving others, rather than simply seeking personal attainment or religious status.

Contrary to popular imagination, “seclusion” in this context does not necessarily mean being completely alone or having no contact with others. Depending on the institution and period, training can include Buddhist study, meditation, chanting, worship, and temple responsibilities. There is no single uniform daily schedule that describes every historical and contemporary instance of the practice.

A Path of Preparation

Before entering isolation, Taguchi completed a preparatory practice called Kosogyo (好相行), which he began in September 2025. This rite requires the monk to offer incense to each of the Buddhas 3,000 times daily while chanting their names and performing repeated full-body prostrations. Practitioners describe the exhaustion of this practice as leading to a vivid vision of the Buddha, a sign that the monk is ready for the stricter seclusion.

Following Kosogyo, Taguchi attended a Jisei Jukai (自誓受戒, self-administered ordination) ceremony at the Kaidan-in hall, formally accepting the precepts that govern his years of confinement.

“A desire to live according to the teachings of Dengyō Daishi has grown in my heart,” Taguchi told reporters before entering. “I have walked the path of a monk with that as my goal.” He added that he was “overflowing with joy to stand at its starting line.”

Life Within the Mausoleum

Within the Jodo-in hall, dedicated to Saichō, who brought Tendai Buddhism from China to Japan in the ninth century, Taguchi’s days will follow a regimented rhythm. He will prepare and cook meals, which are ceremonially presented before the founder’s tomb. Hours each day will be devoted to sutra recitation and continued prostrations. Between these religious duties, he will maintain the mausoleum grounds with meticulous care.

Physical labor is integral to the practice, regarded as a form of moving meditation. The difficulty is compounded by the bitter winters of Mount Hiei, where temperatures routinely drop below freezing.

Clarifying the Distinction from Kaihōgyō

The Jūninen rōzan-gyō is sometimes confused with the more widely publicized Kaihōgyō (千日回峰行), the “1,000-day mountain pilgrimage” that has been the subject of numerous documentaries and books. While both are Tendai practices of extreme austerity, they are distinct disciplines, although the two can occur within a practitioner’s broader training.

The Kaihōgyō requires practitioners to walk as much as 84 kilometers per day through the mountains over a seven-year period, culminating in the dōiri, a nine-day fast with no food, water, sleep, or lying down. Stories about life-or-death commitments associated with Kaihōgyō should not automatically be attributed to twelve-year mountain seclusion. By contrast, the Jūninen rōzan-gyō is a stationary vigil; its ordeal lies in the unbroken continuity of prayer, service, and solitude rather than the physical strain of endurance walking.

The Heart of the Training

According to the Tendai tradition, the purpose of this seclusion is not self-punishment but awakening. The point is the sustained cultivation of wisdom, compassion, and the bodhisattva commitment, not suffering for its own sake. Practitioners aim to purify body and mind under the strictest precepts, serving “the living Daishi”, Saichō, who is believed to remain present in spirit at the mausoleum, both day and night.

A monk who completed the practice, Miyamoto Sotoyoshi, told NHK that despite twelve years of solitude, he never felt lonely. “The COVID pandemic has made the problem of isolation so visible,” he said. “Through this practice, I learned how one can be free from loneliness.”

Taguchi expressed a similar aspiration before entering. His final public words emphasized joy, not dread, a reminder that in the Tendai tradition, even a practice of extraordinary austerity is understood as a path toward liberation.

A Lesson for Lay Practitioners

For those who will never set foot on Mount Hiei, the Jūninen rōzan-gyō offers a broader teaching. The relevant lesson is consistency: keeping ethical commitments and returning to practice over many years, rather than imitating exceptional austerities.

For the next twelve years, the world will continue without Sogaku Taguchi. Within the quiet of the Jodo-in hall, he will be offering incense, cooking rice, and reciting sutras, waiting, as the tradition holds, for the living presence of the founder to meet him.