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.
It's a proper mission this time!
إنها مهمّة حقيقية هذه المرّة
Dieses Mal ist es eine
richtige Mission!
¡Esta vez es una misión de verdad!
¡Esta vez es una misión de verdad!
Cette fois,
c’est une véritable épreuve.
Questa volta è una missione seria!
Desta vez, é uma 
missão de verdade!