Muhyo and Roji visit the home of Shiratori Aya, a client who says a black shadow has been playing her piano at 2:00 AM every night. Muhyo concludes that the shadow is a vengeful spirit born from countless people who envy Aya's talent, but in fact... Later, a package arrives at the bureau for Roji, containing a "magic-sealing pen" and an invitation to take an exam for a promotion to first-class secretary. Then Nana enters with a photo she took of a spirit on a pedestrian bridge...
But in this case, by acting 
without authorization,
لكن في هذه الحالة، تصرّفك بلا إذن
Aber vergiss nicht, dass Nana
durch dein impulsives Verhalten
Pero en este caso,
actuar sin autorización
Tes actes irréfléchis
ont mis Nana en danger,
Ma in questo caso, agendo senza autorizzazione,
Mas neste caso, ao agir sem autorização,
Вот только... Действуя без разрешения,