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?
I used Kyousuke-san's birthday party 
as an excuse to gather you all here,
استخدمتُ حفلة عيد ميلاد كيوسكي-سان
،كعذرٍ لجمعكم هنا
Ich habe Kyōsuke-sans Geburtstagsfeier genutzt,
um euch alle zusammenzubringen.
Usé el cumpleaños de Kyosuke
como excusa para reunirnos,
He usado el cumpleaños de Kyosuke
como excusa para reunirnos,
Bien que je vous aie rassemblés
sous ce prétexte,
Vi ho riuniti qui con il pretesto
della festa di compleanno di Kyōsuke,
Eu usei a festa de aniversário do Kyousuke
como desculpa para reunir todos aqui,
День рождения Кёсукэ — 
лишь предлог собрать всех вас здесь,