The year is 158 AD, and the Roman Empire thrives under the 20th year of Emperor Antoninus Pius's reign. Lucius, a Roman bathhouse architect, is now sixty years old and plagued with back pain. His wife Satsuki has mysteriously disappeared, his son, Marius, is beyond comprehension...and to top i toff, he still has the Roman bathhouses to worry about! (Source: MangaPlus)