Kuroki wants badly to rehabilitate Mythos, the young boy caught up in the Logos incident.  When an unmanned bike starts making strange appearances on the roads of Tokyo, he sees his chance to allow Mythos to contribute to society by solving the mystery.  The bike appears and disappears without causing any harm or hurting anyone.  But Mythos thinks that instead of a bored thrill-seeker, the culprit might be a more dangerous foe...
We believe the criminal is doing this for fun.
.نعتقد أنّ المجرم يقوم بهذا من أجل المتعة
Wir gehen davon aus,
dass der Täter es zur Unterhaltung tut.
Creemos que el delincuente
solo se divierte.
Creemos que el delincuente
lo hace por diversión.
Le coupable ferait ça pour s’amuser.
Pensiamo che il criminale
lo stia facendo per divertimento.
Acreditamos que o criminoso 
está fazendo isso por diversão.