With its Demon Slayer: Kimetsu no Yaiba collaboration event just around the corner, Hakone Kowakien Yunessun (Hakone-machi, Ashigarashimo-gun, Kanagawa) has revealed details of the collaboration drink and original merchandise for "Demon Slayer: Kimetsu no Yaiba × Yunessun — Hakone Onsen Tale: Rest of Wisteria Flowers," which opens July 18 (Saturday). The swimwear-friendly hot spring resort, which celebrated its 25th anniversary on January 1, 2026, will sell a themed drink and a wide range of new merchandise featuring exclusive artwork drawn by ufotable.
More information is available on the special event site: https://www.yunessun.com/kimetsu2026
Collaboration Drink Comes with a Random Collectible Tag
To mark the start of the event, a collaboration drink themed on the "Wisteria Crest House" that appears in the story — the "Wisteria Flower" Oni Drink — will go on sale. Every order comes with a free original collectible tag, randomly selected from 15 designs. Guests can attach a ball chain to turn it into a keychain, slip it into a smartphone case as a decoration, or arrange it however they like.
"Wisteria Flower" Oni Drink: ¥660 (tax included)
Sold at: Fontana, the food court and fast-food counter inside the swimwear hot spring Yunessun
Sale period: July 18 (Sat) – October 4 (Sun), 2026
Hours: Weekdays 10:30 AM–5:30 PM (last order 5:00 PM); weekends and holidays 10:00 AM–5:30 PM (last order 5:00 PM)
The drink's contents are subject to change without notice, and it may sell out or be discontinued during the event period. Purchase limits may apply. Tag designs are given at random and cannot be chosen, and trading of tags within the facility is not permitted. Images are for illustrative purposes only.
New Merchandise Featuring Exclusive ufotable Artwork
A wide lineup of merchandise using exclusive artwork by ufotable — depicting five characters enjoying Hakone Kowakien — will go on sale ahead of general release for this event only. Alongside staple items like can badges and acrylic stands, the lineup includes Yunessun-exclusive items such as face towels and waterproof multi-cases. Guests will also receive a free original postcard, randomly selected from 10 designs, for every ¥2,000 (tax included) spent on original merchandise per checkout.
Sold at: Special merchandise booth inside the Yunessun admission area
Sale period: July 18 (Sat) – October 4 (Sun), 2026
Hours: 10:00 AM–5:00 PM
Merchandise contents are subject to change without notice, and items may sell out or be discontinued during the event period depending on stock. Purchase limits may apply. On some dates, a numbered ticket will be required to purchase merchandise. Postcard designs are given at random and cannot be chosen, and trading of postcards within the facility is not permitted. Images are for illustrative purposes only.
Event Overview
Event name: Demon Slayer: Kimetsu no Yaiba × Yunessun — Hakone Onsen Tale: Rest of Wisteria Flowers
Period: July 18 (Sat) – October 4 (Sun), 2026
Content: Collaboration bath, collaboration sauna, collaboration tickets, collaboration drinks, collaboration merchandise, collaboration room, collaboration accommodation plans, and more
Special site: https://www.yunessun.com/kimetsu2026
Details are subject to change or cancellation without prior notice.
About Demon Slayer: Kimetsu no Yaiba
Demon Slayer: Kimetsu no Yaiba is based on the manga by Koyoharu Gotouge, serialized in Shueisha's Jump Comics volumes 1–23, with cumulative print runs exceeding 220 million copies. Animation production is by ufotable.
The poignant story of humans and demons, its intense sword battles, compelling characters, and occasional comedic moments have made it popular around the world.
The story follows Tanjiro Kamado, a boy whose family was killed by a demon, as he joins the Demon Slayer Corps to turn his sister Nezuko, who has become a demon, back into a human. Broadcast and streaming of the TV anime Demon Slayer: Kimetsu no Yaiba — Kamado Tanjiro's Determination Arc began in April 2019, followed by the theatrical film Demon Slayer: Kimetsu no Yaiba — Mugen Train Arc in October 2020. From 2021 to 2022, the TV anime Mugen Train Arc and Entertainment District Arc aired, and from February 2023, the World Tour Screening "Demon Slayer: Kimetsu no Yaiba — 上弦集結, and to the Swordsmith Village" was held, followed by the TV anime Swordsmith Village Arc starting in April. From February 2024, the World Tour Screening "Demon Slayer: Kimetsu no Yaiba — Miracle of the Bond, and to the Hashira Training" was held, and the TV anime Hashira Training Arc aired from May.
Then, from July 18, 2025, the theatrical film Demon Slayer: Kimetsu no Yaiba — Infinity Castle Arc Chapter 1: Akaza's Return was released across 158 countries and regions including Japan, with a Blu-ray & DVD release scheduled for July 29, 2026.
In addition, a full rebroadcast of the TV anime Demon Slayer: Kimetsu no Yaiba series has been airing since April 5, 2026.
Official website: https://kimetsu.com/
