The TV anime Re:ZERO -Starting Life in Another World- began a collaboration with Oshiage Onsen Daikokuyu, a public bathhouse in Tokyo's Sumida Ward, on October 17, 2026, according to Anime! Anime!. The event runs through November 9, 2026 at the bathhouse (3-12-14 Yokokawa, Sumida Ward) and covers bathing tickets, five character-themed medicinal baths and newly drawn merchandise.
The five characters featured are Emilia, Rem, Ram, Beatrice and Shaula, and each has a medicinal bath that appears on a rotating daily schedule: Emilia's lavender bath, Ram's cherry blossom bath, Rem's nemophila bath, Beatrice's cosmos bath and Shaula's lemon tea bath. The October schedule is posted on Daikokuyu's social media.
Daikokuyu is selling a bathing ticket that comes with one random tenugui hand towel from five designs, plus a complete set pairing one bathing ticket with all five towels. The official AMNIBUS event page lists the single-towel ticket at ¥1,850 and the complete set at ¥6,850, both tax included. Tickets can be used on a day other than the purchase date as long as they are within their validity period, and the bonus towels are limited in quantity.
Collaboration drinks and food are served at Kogane Kitchen, on the second floor of Daikokuyu's sister bathhouse Kogane-yu. Each collaboration menu item ordered comes with one random coaster from five designs, and a collaboration craft bottled beer with an original label is also on sale.
A joint campaign links the bathhouse with the Re:Zero POP UP STREET in Okuyama Omairimachi and Asakusa Nishi-Sando shopping street, which has been running since October 2 in neighboring Taito Ward. Showing a goods receipt from the Asakusa pop-up at Daikokuyu, or a Daikokuyu admission ticket at the shopping streets, earns a square bromide print, with one design at each location and 500 available at each.
The merchandise uses newly drawn "after-bath ver." (湯上がりver.) illustrations as well as chibi-character "bath ver." art. Items include trading glitter can badges (10 types, ¥605 each), trading bromides (16 types, ¥275 each), BIG acrylic stands (five types, ¥1,980 each) and locker-key-style acrylic keychains (five types, ¥1,650 each), all tax included. Every ¥2,000 spent in a single transaction earns one random postcard from 10 designs.
Daikokuyu opens at 3 p.m. on weekdays, 2 p.m. on Saturdays and 1 p.m. on Sundays and public holidays, closing at 10 a.m. the following morning; all times are Japan time. It is closed on Tuesdays, though it opens when a Tuesday falls on a public holiday and closes the following Wednesday instead.