While out on their rounds one day, Tsugumi and Hisui learn of the existance of a book written by a prostitute from Yokohama's redlight district. Hisui seems especially desperate to get his hands on this book and when Tsugumi learns the reason why she becomes determined to help him. When Tsugumi discovers that Shiginuma Shouko, wife of the shady owner of the Nachtigal dance hall, she finds herself stepping back into potentially dangerous territory alone.
It was apparently written by 
a prostitute in Yokohama.
.يبدو أنّه من كتابة مومسٍ في يوكوهاما
In dem Buch geht es
um eine Prostituierte aus Yokohama.
La historia trataba
de una prostituta en Yokohama.
La historia trataba
de una prostituta en Yokohama.
C’est une fille de joie de Yokohama
qui l’aurait écrit.
Sembra che sia stato scritto
 da una prostituta di Yokohama.
Parece que foi escrito por
uma prostituta em Yokohama.
Эту книгу написала проститутка
в Йокогаме.