Pine of Success and Oumayagashi, Asakusa River, No. 61 from One Hundred Famous Views of Edo

It is a clear, starlit evening on the Asakusa River. In the foreground is the famous Pine of Success, hanging out over the river and the two passing boats of the Oumayagashi Ferry.

There is a subtle eroticism in this night scene. Can you locate the suggestive clues? Enclosed in its own private space to the lower left is a roofed pleasure boat. Two pairs of clogs rest in the bow, hinting at a tryst on board, and barely perceptible is the faint silhouette of a woman's head and shoulders behind the lowered blinds. One commentator has proposed that the agitated waves below are similarly suggestive.