Yume no Yu no, Yume no Youna Hibi

Tomohiro Nakakusu and his younger sister Yuka inherited the public bathhouse "Yume no Yu," which has been passed down from generation to generation since the Edo period, However, now that every house has its own bath, there is less need for public bathhouses, and the business is losing money despite all their hard work. Out of necessity, he decides to close down Yume no Yu. On their last day of business, after seeing off the last customer, Tomohiro and Yuka were cleaning up one last time to express their gratitude for the years of service, when they found an old wooden box in a corner of the boiler room. When he opened it, he discovered something strange sealed inside. It is the beginning of a miraculous story about the revival of a public bathhouse on the verge of collapse!

(Source: Orgis Novel, translated)