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.
Hiwako was my mother's name... 
But how do you know her?
،هيواكو اسم أمّي
لكن كيف تعرفينها؟
Hiwako war der Name meiner Mutter.
Woher kennen Sie sie?
Hiwako era el nombre
de mi madre, ¿cómo la conoces?
Hiwako era el nombre
de mi madre. ¿Cómo la conoces?
Hiwako est le nom de ma mère,
Hiwako era il nome di mia madre,
Hiwako era o nome da minha
mãe. Como você a conhece?
Хивако — имя моей матери.
Откуда вы её знаете?