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.
I've made you worry about me all this time.
.لقد كنت قلقة بشأني طوال هذا الوقت
Seit neulich bereite
ich dir nichts als Sorgen.
Te preocupé desde
lo que descubrimos recientemente.
Desde que lo descubrimos
te estoy preocupando.
Je n’aurais pas dû
t’inquiéter ainsi.
È da un po' che 
ti sto facendo preoccupare.
Desde então, só tenho
causado preocupação.
Ты постоянно волнуешься обо мне.