A prostitute from Hananoya, O-Taki, has been killed. When Takuboku says, "I saw Kyousuke in O-Taki's room," Kyousuke becomes a prime suspect. Meanwhile, based on the fact that Takuboku's romaji diary was left in O-Taki's room, Kyousuke begins to suspect that Takuboku might have done it. Where does the truth really lie?
That Otaki was stabbed in the throat 
with a short sword and died.
طُعِنَتْ أو-تاكي في حنجرتِها بسيفٍ قصير وماتَتْ
Jemand hat ihr in den Hals gestochen,
weswegen sie jetzt tot ist.
Falleció a causa
de una puñalada en el cuello.
Falleció a causa
de una puñalada en el cuello.
Elle est morte
d’un coup de poignard à la gorge.
Quella Otaki è morta, trafitta alla gola con un pugnale.
O-Taki foi esfaqueada na garganta
com uma adaga e morreu.
Эта О-Таки мертва. 
Ей всадили нож в горло.