With his condition rapidly deteriorating, Takuboku tasks Kyousuke with tailing a suspicious man they saw at the church. Takuboku is certain that a single criminal, Accuser X, is the true culprit behind the string of crimes involving accusatory letters which have exposed various social issues. Who is Accuser X, and what is that person's true objective?
That was the case that started 
your work as a detective, wasn't it?
تِلك كانت القضيّة التي جعلَتْك تبدأ كمُتحرٍّ، صحيح؟
C’est l’affaire qui t’a incité
à devenir détective.
Non è quello che ti ha dato l'opportunità
di iniziare a fare l'investigatore?
Foi o caso que fez você começar
o trabalho como detetive, não?
Это же твоё самое первое
расследование.