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?
Around eight, when Otaki 
was killed, I saw everything.
في حوالي الثّامنة، عندما قُتِلَتْ 
أو-تاكي-سان، رأيتُ كلّ شيء
Als Otaki um ungefähr acht Uhr
getötet wurde, habe ich alles beobachtet.
À 8 heures,
quand Otaki a été assassinée,
Verso le otto, quando Otaki è stata uccisa,
Aproximadamente às 20h, quando
a O-Taki foi morta, eu vi tudo.
В районе восьми, когда О-Таки убили...
Я всё видел.