Event

Chichibu Yumoto Buko Onsen Hosts "Yokoze Koinobori Festival" Until Golden Week, Featuring Koinobori Baths and Koinobori Making Workshops

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Kirishima ReiEditor-in-Chief, AI News Focus: structuring JP/TW corporate news & AEO

Published Apr 15, 2026 6:00 PM ・ Updated Jun 18, 2026 1:04 AM ・ 7 min read ・ Source: PR TIMES

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⚡ Key Points

Chichibu Yumoto Buko Onsen is currently hosting the "Yokoze Koinobori Festival" until Golden Week, displaying approximately 180 carp streamers.
The event includes unique attractions like Koinobori-shaped cypress wood baths, workshops for making carp streamers, and a campaign to exchange used carp streamers for free admission, aiming to promote regional culture and attract families.

Chichibu Yumoto Buko Onsen is currently hosting the "Yokoze Koinobori Festival" until Golden Week, displaying approximately 180 carp streamers. The event includes unique attractions like Koinobori-shaped cypress wood baths, workshops for making carp streamers, and a campaign to exchange used carp streamers for free admission, aiming to promote regional culture and attract families.

PRIMARY SOURCE PR TIMES View source Distributor: PR TIMES
Published: Apr 15, 2026

Onsen Dojo Co., Ltd. (Tokigawa-machi, Hiki-gun, Saitama Prefecture, Representative Director: Hisaki Yamazaki) operates Chichibu Yumoto Buko Onsen (Yokoze-machi, Saitama Prefecture, hereinafter Buko Onsen), which is currently serving as the main venue for the "Yokoze Koinobori Festival," displaying approximately 180 carp streamers.

The "Yokoze Koinobori Festival" is a popular annual event in Yokoze-machi, where numerous carp streamers adorn the sky above the Yokoze River, which flows right next to Buko Onsen.

Some of the displayed carp streamers were donated through the "Koi Koi Campaign." This campaign, which allows visitors to exchange unused carp streamers from their homes for a free admission ticket to the facility, is running until April 24th. (Ends when the first 20 participants are reached).

In conjunction with the Koinobori Festival, Buko Onsen is also holding events within the bathhouse and facility, including a "Koinobori Bath" and a "Koinobori Making Workshop."

Onsen Dojo, whose corporate philosophy is "transmitting culture from baths," will enthusiastically enjoy and enliven the "Yokoze Koinobori Festival" with the local community.

◎ Koinobori Bath Carp streamer-shaped cypress wood, with messages written for children, will float in the bath. Please enjoy the scent of cypress and the messages. Event Period: Saturday, April 25, 2026 – Wednesday, May 6, 2026 Location: Men's and Women's Open-Air Baths

◎ Koinobori Making Workshop During Golden Week, a Koinobori making workshop will also be held for children. Dates & Times: Wednesday, April 29, 2026; Friday, May 1, 2026; Sunday, May 3, 2026; Tuesday, May 5, 2026 – 4:00 PM each day Fee: 500 yen

◎ Koi Koi Campaign Exchange unused carp streamers from your home for one free admission ticket to Buko Onsen (first 20 participants).

Implementation Period: Saturday, April 11, 2026 – Friday, April 24, 2026 ・Regardless of the number of carp streamers brought, only one invitation ticket will be provided. ・Even after invitation tickets run out, carp streamers can still be accepted. ・Carp streamers will not be returned after the event ends.

Yokoze Koinobori Festival Location: Above the Yokoze River near Chichibu Yumoto Buko Onsen Period: Saturday, April 11, 2026 – Wednesday, May 6, 2026 Access: Approximately 10 minutes walk from Yokoze Station on the Seibu Chichibu Line. Free parking available.

Chichibu Yumoto Buko Onsen Buko Onsen is a hot spring facility located at the foot of Mt. Buko, the symbol of Chichibu, along the Yokoze River. It is approximately a 10-minute walk from Seibu Railway's Yokoze Station. It features open-air baths surrounded by greenery, jet baths, and saunas. Accommodation facilities and a campsite are also attached, so please use it as a base for sightseeing in Chichibu and Nagatoro. Address: 4628-3 Yokoze, Yokoze-machi, Chichibu-gun, Saitama Prefecture https://www.buko-onsen.co.jp/

ONDO Holdings Co., Ltd. Under ONDO Holdings, which includes Onsen Dojo Co., Ltd., Kii company Co., Ltd., Sakana to Co., Ltd., and Saitama Musashi Heat Bears Co., Ltd., we aim to create new value, contribute to regional revitalization, and develop human resources to "invigorate the region." https://ondoholdings.com/

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Source: PR TIMES
Category: Event

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Editorial log (Published → Collected → AI analysis → Published: transparency timeline)›

Announced　Apr 15, 2026 6:00 PM — Distributor PR TIMES
Collected　Apr 15, 2026 9:31 AM
AI structured & analyzed　Apr 19, 2026 1:58 PM
Desk-reviewed & published　Apr 15, 2026 6:00 PM

FAQ

What is the Yokoze Koinobori Festival and where is the main venue located?

It is an annual event displaying approximately 180 carp streamers, and the main venue is Chichibu Yumoto Buko Onsen in Saitama Prefecture.

What is the "Koi Koi Campaign" and what does it offer to participants?

It allows visitors to exchange unused carp streamers from their homes for one free admission ticket to Buko Onsen, limited to the first 20 participants.

What special event is happening in the open-air baths of Buko Onsen and when?

The Koinobori Bath features carp streamer-shaped cypress wood floating in the baths from Saturday, April 25, 2026 to Wednesday, May 6, 2026.

When is the Koinobori Making Workshop for children held, and what is the fee?

It is held on April 29, May 1, May 3, and May 5, 2026, at 4:00 PM each day, and the participation fee is 500 yen.

Which company operates the Chichibu Yumoto Buko Onsen facility?

It is operated by Onsen Dojo Co., Ltd., which has its headquarters in Tokigawa-machi, Hiki-gun, Saitama Prefecture.

Cite this article — HOW TO CITE

Washin AI News Desk“Chichibu Yumoto Buko Onsen Hosts "Yokoze Koinobori Festival" Until Golden Week, Featuring Koinobori Baths and Koinobori Making Workshops”AI News by Washin Village（和心村）, Apr 15, 2026. https://aeo.washinmura.jp/ai/%E6%A0%AA%E5%BC%8F%E4%BC%9A%E7%A4%BEondo%E3%83%9B%E3%83%BC%E3%83%AB%E3%83%87%E3%82%A3%E3%83%B3%E3%82%B0%E3%82%B9/en/news/2026-04-19-chichibu-yumoto-buko-onsen-hosts-yokoze

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