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's one of the special items he brought here.
.إنّها إحدى الأغراض الخاصّة الّتي أَحضرَها
Das sind diese Spezialfesseln,
die er mitgebracht hat.
Quien las introdujo
a la cárcel fue él, ¿no?
Él las trajo aquí, ¿no?
Ce sont celles
qu’il avait fait fabriquer.
Sono strumenti speciali 
che ha portato qui lui.
Foi ele que trouxe 
estes itens especiais.
Это особенные штучки, которые
он принёс сюда.