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...
Why didn't you notice that the cover had been removed?
¿Cómo no se dio cuenta que le sacaron la carátula?
Por que você não viu que 
a capa tinha sido removida?