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...
The inverted mark is the sign of a traitor.
العلامة المعكوسة دلالة خائن
Das Symbol steht mit
invertierten Farben für einen Verräter.
La marca invertida
es señal de un traidor.
Ces couleurs inversées
sont la marque du traître.
Il simbolo invertito è il marchio di un traditore.
O símbolo invertido é
a marca de um traidor.
Инвертированный символ —
это знак предателя.