Boku'un-ji

Kōyōzan Boku'un-ji—'Sun-Facing Mountain'—is a Sōtō temple in Yokoze with a clear view of Mt. Bukō. Its local name, Hagino-dō (荻野堂), preserves the older Kannon hall absorbed here in 1760. The principal image is Shō Kannon (Holy Kannon, Āryāvalokiteśvara). The 1781 Hagino-dō Picture Scroll attributes it to Gyōki (668–749), links it to the Zaō Gongen summit shrine and the subduing of a mountain witch and great serpent, and anchors an 8th-century traditional layer beside the documented Sōtō history.

The summit shrine is no longer an independent worship site; its tradition continues at Boku'un-ji.

Buigai Shundō founded the temple in 1638 (Kan'ei 15) with lay patron Bokuun Nyūdō—Shimada Mikawa-no-kami Shirōzaemon—whose Buddhist name (卜雲) supplied the temple name. After the Hagino-dō's 1760 move, a major 1876 fire destroyed the main hall and other structures. Rebuilding finished around 1907, when the principal image entered the present main hall; current buildings date from this Meiji-era work.

In 2026, the once-in-twelve-years Year of the Horse sōkaichō (March 18 – November 30) opens the inner zushi and principal Shō Kannon for the first time since 2014.

Boku'un-ji's thinness is read through Mt. Bukō, visible across the basin from the precinct. Modern quarrying transformed the profile of this major sacred peak; its summit shrine is gone, but the image that lived there is here. Pilgrims familiar with the mountain from Tokyo or the Kanto region often report that it stops being scenery and becomes sacred topography with a continuing history.

The names form linked devotional addresses: Boku'un-ji on the institutional sign, Hagino-dō in local memory, and Mt. Bukō Kannon in the founding scroll. The 1781 Hagino-dō Picture Scroll preserves that foundation legend in paint as tangible Edo-period devotional historiography within a Yokoze valley temple.

By tradition, an 8th-century Kannon image carved by Gyōki and enshrined at the Zaō Gongen shrine on the summit of Mt. Bukō. The Gyōki founding tradition is hagiographic; what is documentary is the 1638 Sōtō Zen establishment of Boku'un-ji and the absorbed older Hagino-dō.

From legendary Mt. Bukō summit shrine carving (8th century by tradition) → Hagino-dō hall on the mountain's lower slopes → 1638 Sōtō foundation of Boku'un-ji → 1760 reconstruction of the burned Hagino-dō at Boku'un-ji → 1876 fire and 1907 Meiji-era rebuilding with the principal image enshrined in the present main hall.

The roughly 1 km walk from Goka-dō passes residential lanes and small Yokoze fields. Boku'un-ji's modest precinct and experienced stamp-office priests receive first-time pilgrims and tour-bus groups alike. Goka-dō and Hōchō-ji are close enough that many pilgrims pair all three Yokoze temples in one afternoon.

After Kinshō-ji's visual density and Goka-dō's unmanned formality, Boku'un-ji often feels domestic and local rather than monumental. Its clear Mt. Bukō view is especially sharp in winter. Read with the founding legend, the mountain becomes not backdrop but a continuing devotional address.

Bow at the gate and purify hands and mouth at the temizuya. Approach the main hall, place a coin in the saisen-bako, recite a sutra, and leave an osamefuda. Pause to look toward Mt. Bukō from the precinct on a clear day; the temple's identity is bound up with the mountain. Receive the goshuin at the stamp office.

Per the Hagino-dō Picture Scroll painted in 1781: Gyōki, traveling through Chichibu, encountered a yamamba (mountain witch) tormenting people on Mt. Bukō. He drove her away, prayed at a waterfall for the people's protection, and saw a Kannon appear. He carved the figure he had seen and enshrined it at the Zaō Gongen shrine on Mt. Bukō's summit.

The image later worked the further miracle of subduing a great serpent (daija) at the future site of the Hagino-dō, where the hall was built in commemoration. In 1638, the Sōtō priest Buigai Shundō founded Boku'un-ji with the support of the lay patron Bokuun Nyūdō; the Hagino-dō was rebuilt at Boku'un-ji in 1760, and after the 1876 fire the principal image was enshrined in the present main hall around 1907.

Sōtō Zen, with the mountain name Kōyōzan ('Sun-Facing Mountain'). The temple absorbed the older Hagino-dō and its Mt. Bukō Kannon tradition through a series of reconstructions; the Sōtō reorganization that consolidated the Chichibu pilgrimage in the late Edo and Meiji periods incorporated Boku'un-ji as one of its mid-circuit anchors.

Recitation of the Kannon-kyō or Heart Sutra at the main hall; offerings of incense and a small coin; leaving an osamefuda inscribed with personal prayers; annual Sōtō memorial liturgies for parishioners; pilgrim prayers at Boku'un-ji explicitly directed toward Mt. Bukō, visible across the basin.

Sōtō priests perform daily liturgy and issue goshuin. The Hagino-dō Picture Scroll narrative is occasionally referenced in pilgrim materials. The 2026 Horse-Year unveiling intensifies devotional traffic from March through November.

Allow 30–45 minutes for a focused visit including the goshuin. Pilgrims interested in the layered Mt. Bukō tradition should pause to look at the mountain from the precinct on a clear day — the temple's identity becomes more legible with the sightline.

Boku'un-ji holds a layered identity: institutional Sōtō Zen foundation, absorbed Hagino-dō, and surviving address of the Mt. Bukō Kannon tradition. Each register contributes to the temple's felt character.

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.

Hōchō-ji

Yokoze, Saitama Prefecture, Japan

0.6 km away

Akechi-ji

Yokoze, Saitama Prefecture, Japan

1.0 km away

Saizen-ji

Yokoze, Saitama Prefecture, Japan

1.3 km away

Goka-dō

Yokoze, Saitama Prefecture, Japan

1.8 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. 01札所六番卜雲寺（荻野堂） — 横瀬町ホームページ — Yokoze Town GovernmentofficialOfficial Yokoze Town cultural property page; confirms paired identity with Hagino-dō and the local tradition of the temple as the relocated successor to a Mt. Bukō summit shrine.
2. 02札所六番 向陽山 卜雲寺 — 歩楽～里 よこぜ — Yokoze Town TourismofficialLocal tourism portal; visitor information and access.
3. 036番 卜雲寺 — 秩父札所 — Chichibu Fudasho Renraku KaigiofficialOfficial pilgrimage council page; sect and principal image confirmed.
4. 04卜雲寺 — Wikipedia (Japanese) — Wikipedia contributorsofficialConfirms Sōtō Zen sect, mountain name Kōyōzan, founding in 1638 (Kan'ei 15) by founding priest Buigai Shundō and patron Bokuun Nyūdō (Shimada Mikawa-no-kami Shirōzaemon), the temple's alternative name Hagino-dō, the 1781 Hagino-dō Picture Scroll legend of Gyōki and Mt. Bukō, the 1760 Hagino-dō reconstruction at the present site after fire, and the major fire of 1876 (Meiji 9) followed by reconstruction around 1907 (Meiji 40).
5. 05Boku'un-ji Temple — Wikidata — WikidataofficialStructured-data summary: Sōtō Zen, Āryāvalokiteśvara (Shō Kannon) principal image, Yokoze, Saitama.
6. 06Chichibu 34 Kannon Sanctuary — Wikipedia — Wikipedia contributorsofficialPilgrimage-level overview.