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.
You're a small bird with beautiful 
wings that will fly you anywhere.
أنت عصفورة صغيرة بجناحين
.جميلين تُحلّق بك إلى أيّ مكان
Du bist ein Vögelchen mit schönen Schwingen,
die dich überallhin tragen.
Eres un pajarito con unas alas hermosas
que puede volar donde quiera.
Eres un pajarito con unas alas hermosas
que puede volar donde quiera.
Tu es un rossignol
avec de magnifiques ailes,
Sei un uccellino con delle bellissime ali
che ti permetteranno di volare dovunque vorrai.
Você é uma passarinha com belas asas
que a levarão para qualquer lugar.
Ты маленькая птичка с прекрасными крыльями,
которые унесут тебя куда угодно.