Ryuken has been murdered! If they want to get their student ID, the three brothers must find the true culprit. When Ryuken and Yuria take a tumble down the stairs together, they accidentally switch bodies. The strange situation is complicated even further when Shin arrives... Thouzer and his gang make their passionate singing debut as Nanto DE5MEN's first single is unveiled.
That's right! I don't know what happened,
نعم، لا أعرف ماذا حدث
Genau! Ich weiß nicht,
was los ist, aber ehe ich mich versah,
¡Sí! No sé qué pasó,
¡Sí! No sé qué ha pasado,
Oui.
Esatto! Non so cos'è successo, so solo
 che mi sono ritrovata in questa condizione!
Isso mesmo! Não sei
 o que aconteceu,