A young girl contacts the Narumi Detective Agency about her missing grandfather. But what does her case have to do with Shadow Fuuto?
During the course of 
developing this special valve,
،أثناء مسار تطوير هذا الصمّام الخاص
Rentarō Randō hat wohl während
der Entwicklung des Ventils bemerkt,
en développant cette valve,
Rentaro Rando a compris
Rando, durante la costruzione di questo componente,
Durante o desenvolvimento 
dessa válvula especial,
Во время разработки детали
 Рэнтаро Рандо понял,