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...
In addition to the thirteen prison 
buildings within its high, thick walls,
Hinter den hohen, massiven Mauern
befinden sich 13 Trakte mit je 13 Zellen,
Помимо тринадцати
зданий с высокими и толстыми стенами