MUJI HOUSE unveils a storage battery, water circulation system in the Utility unit of "Zero Infrastructure House" experiment project at Shirahama school unit in Minami Boso City, Chiba Prefecture on May 6, 2024. The house comprises the Utility and Living units and is mobile by vehicle.The Living unit has a bio-toilet. Muji House will sell the housing unit from next year. ( The Yomiuri Shimbun via AP Images )