Odd jobs gets a request to collect money from a customer that hasn't paid his bill.  They prepare to take this customer who is said to show up in a prison guard uniform into custody.  However, Gintoki ends up being the one who is taken into custody.  The customer turned out to be a real prison guard!  His name is Kuzunosuke Beri, and there is no law or justice in his prison...
I also check the images on the back!
¡También reviso las imágenes de atrás!
Também dou uma olhada 
nas imagens do verso!