Nanba stands as the globe"s toughest penitentiary, engineered to confine offenders who slip past conventional jails. The quartet housed in Cell 13 is exceptionally sly, having slipped from every other correctional facility with flawless precision. Juugo is a lock‑master who has spent most of his years behind bars; Uno is a high‑stakes bettor with sharp instincts; Nico, an anime aficionado whose body reacts oddly to substances; and Rock, a hulking fighter who adores culinary delights. Their daily antics constantly vex the warden, Hajime Sugoroku, who scrambles to stop them from escaping Nanba.
Nanbaka chronicles the zany, glitter‑laden adventures of these inmates and their guards. From three hearty meals each day to the annual sports carnival, life in Nanba is surprisingly pleasant—and it remains the nearest thing these four have to a home. Even the harshest of routines is softened by camaraderie and an unspoken bond that keeps them grounded daily.