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KAI Hoshino Resorts KAI nagato

KAI Hoshino Resorts KAI nagato

Hoshino Resorts KAI Nagato opend in March 2020, in Nagato Yumoto Onsen, located at the northern mountains of Yamaguchi Prefecture. You will be able to experience the history and rich culture of Yamaguchi Prefecture which has been passed down from ancient times. KAI Nagato is an onsen ryokan located at the foot of the Otozure River which runs through the center of Nagato Yumoto Onsen.

  • 120 min. from Fukuoka
  • English-speaking staff
  • Best Rate Guarantee
  • Free Wi-fi
  • Outdoor bath
  • Half-board

What is KAI?

What is KAI?

Japan’s hidden luxuries—at your fingertips

KAI is a leading brand of upscale boutique hot spring ryokans. Every establishment offers a contemporary take on the traditional Japanese inn, providing unique, location-specific experiences. From exclusive activities to specialty suites, KAI is an invitation to immerse yourself in the rich diversity of Japanese culture.


KAI Nagato's guest rooms features Yamaguchi Prefecture's samurai culture and are inspired by the raised floor design of the rooms where feudal lords used to stay. Guest rooms also used a florid Japanese paper called "Tokuji Washi"—which is officially recognized as one of Yamaguchi's Intangible Cultural Properties⁠—on the bed headboards, as well as on the ceiling latticework. The rooms are equipped with Hagi teaware, a type of pottery which are used during tea ceremony.

KAI Signature Rooms

KAI Signature Rooms incorporate elements of regional craft cultures in their design.

Room types (4)

KAI Amenities

100% flax yukata

These casual kimono have been meticulously woven to provide cooling in the summer and heat in the winter.
*We will prepare it for those who wish. Please let us know when you check in.

Wrapping cloth

In Japan, objects are traditionally carried around in a makeshift bag formed from a sheet of cloth, known as furoshiki. Guests are invited to use these cloths to carry their belongings around the premises.

Luxury mattresses

Our own brand mattresses have been designed to provide proper support to the body while also being soft enough to sink into, allowing for undisturbed sleep.

Other amenities

Shower booth / TV / phone / electric kettle / fridge / safe box / hair dryer / toilet with bidet functions / air purifier with humidifying function


The restaurant overlooking the Otozure River serves dishes made with fresh, seasonal ingredients.


In an area surrounded by the sea and mountains, KAI Nagato offers seasonal Japanese kaiseiki meal that incorporates the blessings of luxurious cuisine. Enjoy vibrant dishes ranging from squid and sea urchin appetizers to dessert made with Yamaguchi Prefecture's famous natsumikan orange.


KAI serves breakfast made with ingredients that let you taste the flavor of the region and the local cooking techniques. At KAI Nagato, we prepare Japanese set meals containing local Yamaguchi ingredients like squid, fish cakes, and "devil weed."

  • No Western meals are served, either at dinner or breakfast.
  • Standard prices include half board.
  • Allergy Information

Hot spring

Nagato Yumoto Onsen is the oldest hot spring area in Yamaguchi Prefecture, with its history dating back to the Muromachi Period. In the Edo Period, even domain lords frequently visited the hot springs for its curative properties. The hot spring area's public onsen, Onto, is said to have been discovered with a sign from the Sumiyoshi Daimyojin God. The hot spring at KAI Nagato also uses this same hot spring source. After having a bath in the hot spring, which is also known as beauty skin hot spring, please enjoy the view of Otozure River at the lounge.

Yuagari Lounge

Facing the Otozure River, Yuagari Lounge serves juice and ice pops made with natsu-mikan, or bitter summer mandarins. Relax by the water and enjoy the views as they change from season to season.

KAI Cultural Discovery

Yamaguchi prefecture, the birthplace of many prominent figures throughout Japanese history, is known for having a culture of higher education. These renowned figures put ink to inkstone so they could pass down the knowledge they gained later to us. At KAI Nagato, you can write with a brush and ink ground on an inkstone, just like in the old days, and create a lasting memory of your trip.

Make your own folding fan

During the closing days of the Tokugawa Shogunate, feudal warriors inscribed their thoughts as characters on folding fans. At KAI Nagato, you can relive the old days by using ink ground on an Akama inkstone, a traditional craft of Yamaguchi prefecture, to write characters on your own original folding fan made with Japanese paper. Create memories of your trip with the smell of fresh ink in the air, and enjoy a moment of beautiful cultural engagement.

Akebono Café

Otozure River, which runs through the center of the Nagato Yumoto Hot Springs, where KAI Nagato is located, is lined with cherry blossoms and willows, which allow guests to take in such elegant seasonal sights as the autumn foliage. Along with the hot springs, KAI Nagato also is the home of Akebono Café, which serves dorayaki pancakes and refreshments. Both guests and outside visitors are welcome to stop by when taking a stroll through the natural surrounds of the Otozure River area.


Taineiji Temple

There is a legend that says the hot spring of Nagato Yumoto Onsen is opened following a sign from Sumiyoshi Daimyojin God that Joan zen master of Tainenji Temple saw during his zen meditation in the Muromachi Period. This shows part of how deeply linked Nagato Yumoto Onsen and Tainenji Temple are. The grounds of the shrine, which offer a glimpse into the relationship the shrine has had with various historical events, are known as a famous spot for beautiful cherry blossoms in the spring and colored leaves in the autumn.

  • 5min
  • Motonosumi-jinja Shrine

    Situated on a cliff over the Sea of Japan, the "Ryugu no Shiofuki" (meaning Dragon's Spout) found here has been designated by Japan as a natural monument. A magnificent contrast of colors is created at Motonosumi-jinja Shrine, where 123 torii gates are lined up over approximately 100m, with the location being selected by American TV station CNN as one of "Japan's most beautiful places," garnering attention from overseas as well.

  • 40min
  • Tsunoshima and Tsunoshima Great Bridge

    The spectacular view of the emerald green sea when crossing the Tsunoshima Great Bridge from northwestern side of Honshun to Tsunoshima Island is often featured in car commericals. The coastline in the northern part of Yamaguchi Prefecture, including Tsunoshima, has also been designated as Kita-Nagato Kaigan Quasi-National Park, bustling with tourists in the summer.

    Shokasonjuku Academy

    Located in Hagi city, Yamaguchi, Shokasonjuku Academy was established during the Bakumatsu (late Edo) period by Yoshida Shoin, and produced many of the most famous patriots of the era, including Takasugi Shinsaku and Ito Hirobumi. The academy is registered as one of the "Sites of Japan’s Meiji Industrial Revolution" by UNESCO. Given its place in history and the part it played in the modernization of Japan, the Shokasonjuku Academy is visited by a great many visitors from all across the country.


    Check-in 15:00
    Check-out 12:00
    Rooms 40
    Parking 40
    Facilities Front Desk / Shared baths halls / Yuagari Lounge / Restaurant / Travel Library / Shop

    Travel Library

    Every KAI establishment features a library consisting of books on the area's history, culture, crafts, and geography. Complimentary refreshments are also served.

    KAI Nagato

    2229-1 Fukawayumoto, Nagato,
    Yamaguchi 759-4103