Hozuki Castle is a prison run by the Hidden Grass, well known for being notoriously difficult to escape from. Boruto and Mitsuki are sent there to protect Kokuri, a former member of a brutal band of robbers known as the Mujina Gang who's now targeted by assassins after betraying and deserting the gang.
Whatever worked on the outside
doesn't mean crap in here!
!أيًّا كان سائرًا في الخارج لا يعني شيئًا هنا
Was auch immer ihr da draußen gemacht habt,
hier nützt euch das ’nen feuchten Dreck!
Aquí el sentido común
del exterior no funciona.
Aquí no sirve de nada
el sentido común del exterior.
Le leggi che valgono fuori
 non hanno alcun valore qui dentro!
O que funcionou lá fora
não significa nada aqui!
Логика внешнего мира
здесь вам ничуть не поможет!