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 been searching for your 
replacement all this time,
،لقد كنت أبحث عوضًا عنك طوال هذا الوقت
Ich habe die ganze Zeit
ohne dich geforscht,
He estado buscando tu reemplazo
todo este tiempo,
He estado buscando tu reemplazo
todo este tiempo,
Je cherche un remplaçant
depuis ton départ,
Per tutto questo tempo
 ho continuato le ricerche al posto tuo,
Eu estive procurando no seu lugar,
Всё это время я искал тебе замену,