Onzan-ji (恩山寺)

Onzan-ji, Temple 18 of the Shikoku 88, is the 'Temple of Gratitude.' It stands at the place where Kūkai's mother, Tamayori Gozen, became one of the first women admitted to a previously male-only mountain temple — after he performed a 17-day rite to lift the women's-entry ban. Pilgrims often pause longer here than elsewhere, writing prayers for parents and elders.

Climb the wooded slope to Onzan-ji and you arrive at a temple shaped by an unusual story — the moment a sacred mountain opened. Around 814-815, while Kūkai was practising on this mountain, his elderly mother Tamayori Gozen travelled from Sanuki (today's Kagawa) to see him. The mountain held the nyonin kekkai, the women's-entry ban that was standard at many esoteric Buddhist sites. She was stopped at the foot of Hanaorizaka Hill. Kūkai, the founder of Japanese Shingon, performed a 17-day esoteric ritual to lift the boundary. After the ban was lifted, his mother ascended, shaved her head, and lived as a nun under his care. He renamed the temple Onzan-ji — 'Temple of Gratitude Mountain' — for her. The Yakushi Nyorai enshrined in the Hondō 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, the small chapel of Tamayori Gozen — Daishi-no-Hahadō — sits within the precinct, and a Biranju tree, designated a prefectural natural monument, is said to mark the spot where the ban was lifted. Pilgrims write osamefuda for their own mothers here. They stand at the red-railed bridge near the Biranju and remember. Onzan-ji often functions as the temple where the henro becomes personal — where the abstract idea of shugyō (training) takes the shape of someone you actually love, someone who raised you. The temple remains a working Kōyasan Shingon site, with daily services, regular pilgrim flow, and memorial services especially around Higan and Obon. Walking pilgrims continuing south will cross Hanaorizaka, the same hill where, in legend, the boundary once held.

Part of Shikoku Pilgrimage.

A Gyōki foundation in the early 8th century, reconfigured by Kūkai around 815 in a story specifically about his mother.

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.

A temple of an unusual reversal — the mountain that opened, the boundary that yielded, the son who returned the bow.

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.

Standard Shingon henro worship, with strong emphasis on memorial prayers for parents and elders.

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.

A temple of softer feeling — small, wooded, with a chapel for a mother and a tree for a vow lifted.

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.

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

Historians of Japanese Buddhism read the Onzan-ji legend as a culturally important narrative through which the Shingon school articulated its accommodation of women. The institutional mainstream maintained nyonin kekkai — most notably at Kōyasan itself, where the ban held until 1872 — while folk-level practice celebrated its lifting here. The result is an ongoing tension within the tradition that Onzan-ji preserves in story rather than resolving in doctrine.

Local devotion centres on Kūkai as a model son. That the founder of esoteric Buddhism in Japan would bend doctrinal rule to honour his mother is held up as evidence that on (gratitude to parents) is itself a form of buddha-nature. The Biranju tree is treated as living witness, and the Daishi-no-Hahadō chapel as a maternal hearth within the precinct.

In some Shingon esoteric readings, Tamayori Gozen is iconographically merged with the bodhisattva Marishiten or with Bishamonten consorts. Her chapel here has, at times, been treated as a quiet locus of feminine awakening within otherwise patriarchal mountain practice — a counter-current to the kekkai logic that defined most contemporaneous mountain temples.

The historicity of the 17-day rite cannot be verified, and the precise location of the original kekkai gate is unknown. The Biranju tree's age is debated; while called a centuries-old natural monument, dendrochronological studies have been limited.

Komatsushima access, modest 30-45 minute visit, longer if doing memorial prayers.

Address: 18 Yumoto, Tashiro-chō, Komatsushima, Tokushima 773-0008. About a 1.5 km / 25-minute walk from Tateiwa Station on the JR Mugi Line. Short taxi from the JR Komatsushima area. Free parking on site. Phone: 0885-33-1218 (verify); standard Shikoku 88 nōkyō hours typically 07:00-17:00.

Komatsushima offers small business hotels and minshuku. Pilgrim-friendly lodging is more common in nearby Tokushima City; some henro choose to stay overnight at Tatsue-ji's shukubo just south.

Open and welcoming. Standard temple decorum applies; the Biranju tree is protected.

Onzan-ji is a soft, unrestrictive temple. Pilgrim attire is welcomed but never required, and visitors of all backgrounds are received with the same warmth. Inside the halls, hats off, voices low, no stepping on the wooden thresholds. Photography in the precinct is fine — the Biranju tree and red-railed bridge are popular photographic subjects — but altar interiors should not be photographed without explicit permission. Drones are not permitted. The Daishi-no-Hahadō chapel asks for a slightly more careful tone, given its memorial function.

Modest casual is fine. Full pilgrim regalia — white hakui, kasa, kongō-zue — is welcomed but not required.

Permitted in grounds. Do not photograph altar interiors without permission. The Biranju tree is one of the most photographed features of the precinct.

Coins, three sticks of incense, one candle, an osamefuda dropped in the wooden box at each hall. Sutras may be copied (shakyō) and offered. The temple specifically welcomes osamefuda written for parents.

No drones, no eating in halls, no climbing on the Biranju tree (a designated natural monument).

Nearby sacred places create the location cluster described in the growth plan. This block is intentionally crawlable and links into the wider regional graph.

Tatsue-ji (立江寺)

Komatsushima, Komatsushima, Tokushima, Japan

3.2 km away

Kakurin-ji (鶴林寺)

Katsuura, Katsuura, Tokushima, Japan

10.5 km away

Jōraku-ji (常楽寺)

Tokushima, Tokushima, Tokushima, Japan

11.9 km away

Dainichi-ji (大日寺)

Tokushima, Tokushima, Tokushima, Japan

12.1 km away