Hajime, Jyugo, Uno, and Nico head to Building 5 to find out about Rock and Yamato.
Jyugo and the others fall into a trap and end up in level 1 underground cell.
There, they find the captured Upa and Liang.
Meanwhile, Hajime is captured by Inori and is escorted to the underground cell where Samon, covered in injuries, is restrained.
Samon reveals who’s behind the incident.
It is no other than Enki Gokuu, the former Building 5 supervisor who became a criminal causing havoc in Nanba Prison in the past. He is also Samon’s brother.
It was used in the prison where
we were previously held.
لقد استُعملت في السّجن الّذي كنّا 
.محبوسين فيه في السّابق
Die waren im Gefängnis im Einsatz,
in dem wir vorher saßen.
Los usaban en nuestra antigua prisión.
Los usaban en la que estábamos antes.
Ils faisaient office de gardes
dans notre ancienne prison.
Erano usati in quella
in cui eravamo detenuti precedentemente.
Eles usavam isso na prisão 
que estávamos anteriormente.
Таких же использовали в той
тюрьме, где нас держали ранее.