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.
I'll feel the same humiliation 
and regret all over again.
.شعرتُ بنفس الإهانة والنّدم مرّة أخرى
muss ich diese Schmach und diese Reue
von damals abermals durchstehen.
volveré a sentir el mismo
arrepentimiento y humillación.
volveré a sentir el mismo
arrepentimiento y humillación.
je connaîtrai de nouveau
l’humiliation et le regret.
proverei ancora la stessa umiliazione
e lo stesso rimorso di quella volta.
Vou passar pela mesma humilhação
 e arrependimento de novo.
я снова испытаю то самое
унижение и буду обо всём жалеть.