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...
Thank you, Muhyo!
!شكراً لك يا موهيو
Danke, Muhyo!
¡Gracias, Muhyo!
Grazie, Muhyo!
Obrigado, Muhyo!
Спасибо, Мухё!