NANBAKA

Four inmates recklessly attempt to escape from the world’s best prison guards and security: Jyugo, who wears mysterious shackles, Uno, a self-proclaimed ladies’ man, Nico, an otaku who’s prone to illness and Rock, a foodie gang member.

The inmates in Cell 13; Jyugo, Uno, Nico, and Rock are spending their days escaping, creating mischief, gossiping, and sometimes, working. These troublemakers are giving a headache to supervisor of Bldg. 13, Hajime Sugoroku.

Jyugo and the gang are killing time teasing the new guard. One day, a new inmate is sent to Cell 13 - Inmate Number 99, Tsukumo. He looks and acts like a ninja, but not everyone is buying it.

Nanba's New Year’s Tournament begins by gathering all of the inmates together, but all of the matches are odd events relating to New Year’s. Can Building 13 win against the other inmates led by peculiar guards?

Jyugo and the gang are advancing through the New Year’s Tournament without a hitch. In the Hyakunin Isshu event, Uno wins against the Building 3 inmates, Trois and Honey. The 4th event is a physical match revolved around a spinning top.

Cell 13 has advanced their way to the final event of the New Year’s Tournament. Jyugo and Hajime are battling against the Building 4 supervisor, Kenshirou Yozakura, and an inmate named Musashi.

Tsukumo heads to the visiting room during break from the New Year’s Tournament. His manager, Hattori, has come to visit. People think the action star is missing and has no idea he’s in prison. Hattori tries to persuade Tsukumo to come back into stardom.

The shackles have been triggered and Jyugo’s hands transformed into blades. He attacks Musashi and splits the arena in half. Momoko orders the guards to apprehend Musashi and Jyugo. Musashi retaliates against the guards while Hajime stands in Jyugo’s way.

After causing a catastrophe at the Tournament, Jyugo and Musashi are sent to the underground cell. Unable to move freely, Musashi gives Jyugo information on the man with the scar.

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.

Building 13 Cell 13 has won the New Year’s Tournament. Rock and Nico invite inmates from other cells to show their prizes.

All the inmates and guards who fought in the New Year’s Tournament gather in the game room. They enjoy each other’s company putting their animosity behind them. Jyugo later escapes the cell alone and encounters a certain person...

A man named Elf suddenly appears in front of Jyugo, and threatens to harm those around him before disappearing. Jyugo fears that something bad might happen to his friends if he stays, so he decides to escape from Nanba Prison alone.