Notices: Notice Concerning the Closure of KAI Aso
KAI Aso will permanently close its doors on October 27, 2026. To express our deepest gratitude from all our staff to our valued guests for your patronage over the years, we will be hosting a closing event, "The Reminiscent Finale," from September 1 to October 26, 2026. This special event is designed to allow you to fully experience the unique charms of KAI Aso before our closure. Please click here for event details.
【Notice】 Regarding Delivery of Messages Leading to Phishing Sites
Please beware of suspicious e-mails pretending to be from Hoshino Resorts. There have been e-mails sent under the subject such as "Urgent Contact," "Important Notice," "Identification Confirmation," etc. We never ask for important information such as credit card numbers, expiration dates, PINs, etc. via e-mail. If you find a suspicious email as above, please delete it without clicking on the URL in the e-mail.

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Activities

ABCs of Onsen Culture

Name: KAI Aso
Telephone: 050-3134-8092

Majestic scenery, crystal-clear spring water flowing abundantly, and rich hot springs. Life in Aso has always flourished alongside the blessings of the volcano. Enjoy a special moment to experience the story of this great earth through touch, taste, and sight.

■ What is "ABCs of Onsen Culture"?
At KAI, a leading brand of hot spring ryocans across Japan, we offer "Onsen Culture Iroha"—a special program designed to help guests go beyond simply soaking in the water and truly immerse themselves in the unique regional hot spring cultures.

ABCs of Onsen Culture
Period	Mon, Jun 1, 2026 – Mon, Oct 26
Time	9:40 AM～
Duration	20 minutes
Appropriate age	For all ages
Capacity	8 guests
Meeting spot	Terrace *In case of rain, the event will be held at Caldera BAR.
Hosted in	Japanese
Reservation	Please sign up at the front desk on the day of the activity.

Activities

Notice Concerning the Closure of KAI Aso

【Notice】 Regarding Delivery of Messages Leading to Phishing Sites

ABCs of Onsen Culture