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.
Silly me. I'm sure it's just that when we fell
يا لسخافتي! أنا متأكِّدة أن كل ما في الأمر
Ich Dummerchen!
Bestimmt bin ich beim Sturz …
Claro. Seguro que solo nos caímos
Claro. Seguro que solo nos caímos
Mais oui,
Che stupida. Probabilmente quando siamo caduti 
dalle scale sono finita dentro il suo manichino.
Ah, que bobagem! Aposto 
que eu fui parar no papelão