Season 1

Smiling ladies dressed in pink uniforms enjoy a game of softball at a modern and peaceful women's prison. But one of the inmates is trying to escape.

Kotone has begun doing time at the prison but is bullied at the hands of Sara and the others. The prison plans to hold a dance event.

Kotone grows closer to Sakurako which piques Natsu's interest. Kotone learns that Sara will take a national exam to become a cosmetologist.

It's the busy season for visitors to the prison. While everyone is excited to see friends and family, Natsu and Sakurako boast of their male visitors.

Domeki is on the hot seat and tries to cover for her mistake after her slip of the tongue reveals to Kotone the importance of the black leather book.

Having learned the identity of the person behind the false accusations against her, Kotone brings Ume over to her side and prepares to fight back.

Kotone comes forward to Natsu and the others with her plan to escape. As they discuss the details an announcement is broadcast over the loudspeaker.

The group breaks out of prison and boards a truck headed for Tokyo where Tsukasa waits for them. They prepare for the final showdown with Tsukasa.