Onzan-ji

Onzan-ji's wooded slope is shaped by the story of a sacred mountain opening. Around 814-815, while Kūkai practiced here, his elderly mother Tamayori Gozen traveled from Sanuki, today's Kagawa, to see him. The mountain's nyonin kekkai, the women's-entry ban common at esoteric Buddhist sites, stopped her at Hanaorizaka Hill. Kūkai performed a 17-day esoteric ritual to lift the boundary. His mother then ascended, shaved her head, and lived as a nun in his care.

He renamed the temple Onzan-ji, 'Temple of Gratitude Mountain,' for her.

The Hondō's Yakushi Nyorai predates this story. Onzan-ji's first founding is attributed to Gyōki in the Tenpyō era (729-749) as a Bishamonten chapel; Kūkai's reconfiguration around 815 layered a son's filial vow over the older site. Today Daishi-no-Hahadō, the small chapel of Tamayori Gozen, stands in the precinct. A Biranju tree designated a prefectural natural monument is said to mark where the ban was lifted.

Pilgrims write osamefuda for their mothers and remember at the red-railed bridge near the Biranju. Here abstract shugyō, or training, becomes love for someone who raised you. Onzan-ji remains a working Kōyasan Shingon temple with daily services, regular pilgrim flow, and memorial services especially around Higan and Obon. Walkers continuing south cross Hanaorizaka, where legend says the boundary once held.

Most mountain temples in esoteric Buddhism preserve their boundaries. Kōyasan itself maintained the women's-entry ban until 1872. Onzan-ji preserves the opposite: the moment one such boundary was deliberately undone for a single act of filial devotion. Tradition tells that when Tamayori Gozen reached Hanaorizaka and could not pass, Kūkai withdrew into a 17-day esoteric rite — the kind of practice that reshapes karmic and energetic structures. When she ascended, she shaved her head and lived out her remaining years here.

The name Onzan, 'Gratitude Mountain,' is a son's response. The thinness here is not about heightened austerity but about a softening of structure — the rare moment patriarchal mountain practice yielded to a more intimate logic. The Biranju tree, the red-railed bridge near it, and the Daishi-no-Hahadō chapel all hold that softer atmosphere. Pilgrims often report the temple as emotionally tender, the kind of place where they write more, pray more slowly, and think specifically about their parents.

Founded by Gyōki in the Tenpyō era (729-749) as a small chapel enshrining a Bishamonten image he had carved. The original purpose was protection — Bishamonten as guardian of the dharma and of the four directions. Kūkai's reconfiguration around 815 reoriented the site around Yakushi Nyorai (healing) and around the unusual story of his mother.

The temple expanded under Kūkai's patronage and the imperial support that followed. Across centuries it persisted as a Shikoku 88 stop, with the Tamayori Gozen narrative becoming central to its identity by the medieval period. The Daishi-no-Hahadō chapel and the Biranju tree are now the temple's most visited features after the two main halls. Onzan-ji remains a Kōyasan Shingon temple receiving daily henro pilgrims and offering memorial services for parents around Higan and Obon.

The approach to Onzan-ji rises through trees. Walkers coming from Tatsue-ji or Ido-ji often arrive a little tired, and the temple's modest scale meets that mood. Past the gate, the precinct opens with the Hondō ahead and the Daishidō to the side, both unhurried. The Tamayori Gozen chapel — the Daishi-no-Hahadō — is small, off to one side, and easy to miss if you do not know to look. Many pilgrims do know.

The Biranju tree, a southern evergreen marked as a prefectural natural monument, stands near a red-railed bridge that has become a customary photo and prayer point. People stop there longer than at most temples. They write osamefuda not only for themselves but for parents, sometimes for a parent who has died, sometimes for one still alive but ill or distant.

The small ceremony of writing a name on a paper slip and slipping it into the wooden box at each hall takes on weight here. The temple's atmosphere reflects this — quieter than the busier coastal temples, warm rather than imposing.

Bow at the gate. Purify hands and mouth at the stone basin. Offer at the Hondō first to Yakushi Nyorai, then at the Daishidō to Kōbō Daishi. After the formal worship, walk to the Daishi-no-Hahadō, the Tamayori Gozen chapel — a small space where many pilgrims write osamefuda specifically for parents and elders. Visit the Biranju tree and the red-railed bridge nearby. Receive your nōkyōchō stamp at the temple office before leaving. Bow at the gate as you depart.

Tradition holds that Gyōki, the wandering Nara-period monk-engineer, founded a small chapel here in the Tenpyō era (729-749) and enshrined a Bishamonten image of his own carving. About a century later, around 814-815, the young Kūkai practised on this mountain. His mother Tamayori Gozen travelled from Sanuki to visit him and was stopped at Hanaorizaka by the women's-entry ban that protected most esoteric mountain practice sites.

Kūkai withdrew into a 17-day esoteric rite, after which the ban was considered lifted at this particular temple. His mother ascended, shaved her head, and took the tonsure here, living as a nun under his care. Kūkai renamed the site Onzan-ji — 'Temple of Gratitude Mountain' — and reoriented its principal worship toward Yakushi Nyorai, the Medicine Buddha. A Biranju tree, said to mark the lifting of the ban, still stands within the precinct.

Kōyasan Shingon. Onzan-ji is the 18th of the Shikoku 88 in standard order, in Komatsushima City just south of Tokushima. The temple sits within a regional grouping of three legendary East Tokushima temples — Onzan-ji, Tatsue-ji, and Dougaku-ji — though only Onzan-ji and Tatsue-ji are formal henro stops.

Goma fire rituals on key Shingon dates. Yakushi-related healing services. Memorial services for parents are particularly significant here, especially around the Higan equinoxes and during Obon in mid-August, when the temple's filial-gratitude framing draws families specifically for ancestor remembrance.

Daily henro flow. Pilgrims worship at the Hondō and Daishidō, then often pause longer at the Daishi-no-Hahadō (Tamayori Gozen chapel) than at many comparable side-halls elsewhere on the route. The Biranju tree and the red-railed bridge are customary photo and prayer points. Memorial osamefuda written for parents are visibly common in the wooden offering boxes here.

If you have living parents you have not thought of recently, this is a good place to think of them. Write an osamefuda with their name and a brief intention. If your parents have died, the same gesture serves as memorial prayer. Read the Heart Sutra at the Hondō and the Daishidō; if you know the Kōbō Daishi mantra ('Namu Daishi Henjō Kongō'), include it. Visit the Daishi-no-Hahadō unhurriedly.

Onzan-ji's founding legend sits at the intersection of institutional Shingon doctrine and folk-Buddhist accommodation. Different readings emphasise different layers.

Films, episodes, and recorded talks for visitors who want more context before or after a visit. Speculative and alternative-history entries are labelled as perspectives, not as sources for established claims.

Continue through the atlas by country, tradition, physical form, or a focused search that combines this place’s strongest context.

Explore other sacred places in the region. Proximity does not establish access or travel time; check each place’s guidance.

Tatsue-ji

Komatsushima, Tokushima Prefecture, Japan

3.2 km away

Kakurin-ji

Katsuura, Tokushima Prefecture, Japan

10.5 km away

Jōraku-ji

Tokushima, Tokushima Prefecture, Japan

11.9 km away

Dainichi-ji

Tokushima, Tokushima Prefecture, Japan

12.1 km away

Sources consulted for this page. Source categories describe the publication, not a guarantee that every claim is verified. Traditional accounts and outside interpretations may differ.

1. 01Boyouzan Houjyuin Onzanji – Shikoku 88 Temple Pilgrimage — Shikoku 88 ReijokaiofficialOfficial temple association page.
2. 02Onzan-ji — Wikipedia contributorsencyclopediaSect (Kōyasan Shingon), principal image, foundation summary.
3. 03Onsanji Temple, the 18th temple of the 88 Shikoku Pilgrimage — Shikoku Pilgrimage NewsguideDetailed Tamayori Gozen story and mother-son legend.
4. 04Temple eighteen in the Shikoku Ohenro pilgrimage is known as the Temple of Gratitude Mountain — Japan TravelguideSymbolism of mountain name.
5. 05Three Legendary East Tokushima Temples: Onzanji, Tatsueji and Dougakuji — East Tokushima TourismguideRegional context and Biranju tree.
6. 06Temple 18, Onzan-ji — Shikoku ToursguidePractical visit details.