It is a murky winter night as the Oumayagashi ferry approaches its landing on the west bank of the Sumida River. The two figures in the bow of the ferry are yotaka, "night hawks"—the lowest class of prostitutes in Edo. This image is the closest Hiroshige ever attained to depicting the vicissitudes of the life of Edo's lower class, and he did so in a manner calculated not to offend. The faces, for example, are shown as amusing caricatures of the thick lips and pug noses for which yotaka were known. In fact, many such women were disfigured by disease, which led them to hide under the sort of thick make-up we see here. The yotaka suffered a brutal life, and their painful existence was long associated in Japanese art and literature with the cold of winter.