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...
According to Magical Law Article 1624,
وفقاً لقانون السحر البند 1624
Gemäß Artikel 1624 des Magierechts,
Según el artículo 1624 de la Ley Mágica,
Article 1624 du Code de la magie.
Conformemente all'articolo 1624 
del Codice Magico,
Segundo o Artigo 1624 do Direito Mágico,
По статье 1624 Закона о паранормальном,