Hoshino Resorts and Japan's Largest Sauna Media "Sauna Collection" Announce First Collaboration! "Hoshino Resorts Sauna Collection" to be Held at 9 Nationwide Facilities!

HIDANE Co., Ltd. (Headquarters: Yokohama, Kanagawa Prefecture), which operates "Sauna Collection," one of Japan's largest sauna media, will collaborate for the first time with Hoshino Resorts, which operates 75 facilities in Japan and overseas. They will hold an experiential event called "Hoshino Resorts Sauna Collection" targeting 9 facilities nationwide, starting April 1, 2026. This campaign is a stamp rally project that proposes a new travel style, allowing participants to tour Hoshino Resorts' unique saunas as if "collecting" them.

1. Background and Vision of the Campaign In recent years, saunas have become a common means of daily refreshment, and "sauna travel" (sa-tabi), a style of travel that prioritizes "whether there is a high-quality sauna experience" when choosing accommodation, has become widespread. This project was born from the desire to have guests enjoy touring the unique saunas that Hoshino Resorts operates across Japan, each leveraging the individuality of its location, through a stamp rally.

2. "Hoshino Resorts Sauna Collection" Campaign Overview ■ Event Period: April 1, 2026 - February 28, 2027 ■ Eligibility: Limited to guests staying at the participating facilities ■ Participation Fee: Free (※Accommodation fees are separate) ■ How to Participate: Read the QR code from the dedicated POP installed at each facility and acquire stamps using the "Shop Card function" of the LINE official account.

3. Collect Stamps and Get Original Collaboration Goods! Details Original goods, available only at this event, will be presented according to the number of stamps acquired. All facilities: Original sticker for each facility 2 stamps: Original towel 5 stamps: Entry right for "Hoshino Resorts" accommodation voucher (6 pairs will be selected by lottery) 3 facilities x 2 pairs each (total 6 pairs) ・OMO7 Asahikawa by Hoshino Resorts ・RISONARE Tomamu ・Aomoriya by Hoshino Resorts

※Quantities are limited. The campaign will end once supplies run out.

＼Furthermore! No losing when you achieve 5 stamps!／ Even those who do not win the accommodation voucher lottery will receive a case of "Pocari Sweat Ion Water 900ml, 12 bottles" as a gift.

4. List of Participating Facilities (9 facilities nationwide) Nine facilities across Japan, offering unique sauna experiences, are eligible. OMO7 Asahikawa by Hoshino Resorts https://hoshinoresorts.com/ja/hotels/omo7asahikawa/

After enjoying a dry sauna with plenty of humidity at approximately 85℃ at "Sauna Plateau," guests can experience "totonoi" (a state of deep relaxation) with a cold bath using water drawn from about 70 meters underground and filtered, an "underwater infinity chair" offering ultimate buoyancy in a neutral temperature bath, and a "zero-gravity chair" where one can feel liberated from gravity, as if floating in space.

RISONARE Tomamu https://hoshinoresorts.com/ja/hotels/risonaretomamu/

All guest rooms are equipped with private saunas and panoramic jet baths, realizing the ultimate "rewarding sauna trip." The overwhelming sense of openness, where you can monopolize the magnificent scenery of Hokkaido from a sauna room of around 75℃, is a luxury unique to this facility. You can fully enjoy the highest quality "scenic indoor bathing" at your own pace without worrying about your surroundings.

OMO5 Hakodate by Hoshino Resorts https://hoshinoresorts.com/ja/hotels/omo5hakodate/

At "Amber Hot Spring," in addition to a free-flowing hot spring rich in iron and salt, two types of saunas are available: a dry sauna for thorough sweating and a mist sauna that envelops you in gentle steam. Combined with a cold bath of approximately 15℃ and a warming hot spring bath, it promises the ultimate "totonoi" experience.

Aomoriya by Hoshino Resorts https://hoshinoresorts.com/ja/hotels/aomoriya/

At the "Aomori Nebuta Sauna," which opened in April 2024, guests are enveloped by the overwhelming power of a handcrafted Nebuta float enshrined in front of the sauna room. With auto-löyly synchronized with the excitement of the festival music, guests can experience an exhilaration as if they are in the midst of a festival. It offers the "ultimate fervor and totonoi" that can only be experienced here, integrating with Aomori's culture.

KAI Matsumoto https://hoshinoresorts.com/ja/hotels/kaimatsumoto/

Scheduled for a long-awaited reopening in the summer of 2026. Its feature is the dreamlike combination of hot springs and saunas. Guests can enjoy touring a total of four types of saunas, including dry and mist saunas. Experience supreme "totonoi" with eight types and thirteen variations of bathing, including a cold bath known for its depth.