Hajime has been given a three-day suspension due to beating Jyugo at the New Year’s Tournament. Momoko orders Kenshirou, Kiji, and Samon to take turns covering for Hajime.
But Uno, Nico, and Rock do whatever they want as usual. 
The three supervisors constantly struggle to maintain order with the three troublemakers.
Finally, after three days, Jyugo is back...
Building 13 is already full of troublemakers,
،إضافة للحادثة مع السّجين رقم 15
Nach diesem Zwischenfall
mit Nummer 15
Además del incidente del número 15,
Además del incidente del número 15,
Au vu du problème avec nº 15
et des autres enfants perturbateurs,
Oltre all'incidente legato a Numero 15,
Além do incidente com o nº 15,
В тринадцатом здании полно смутьянов,