Confessing to being the spy within Fukurou, Akira leaves after pledging to Tsugumi that he will protect her. Rattled by the revelation of his betrayal, the other members are unable to hide their upset. After leaving Fukurou, Akira heads straight for Shiginuma to angrily confront him for his threats to Tsugumi. Meanwhile, Tsugumi learns some surprising new information about cursed tomes from Nabari.
He was doing an undercover 
investigation in Nachtigal,
،لقد كان يجري تحقيقًا سريًّا في ناتشتيغال
Er hat verdeckt
in der Nachtigall ermittelt,
Era un investigador
infiltrado en Nachtigal,
Era un investigador
infiltrado en Nachtigal,
Celui qui s’était infiltré
au Nachtigal.
Stava conducendo
 un'indagine sotto copertura al Nachtigall,
Ele conduzia uma investigação
secreta no Nachtigal,
Он проводил тайное
расследование в «Птице Певчей»,