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.
But I have my position as
the Lord of the Castle. I'm sorry.
aber ich muss meine Rolle
als Vorgesetzter erfüllen.
ma anche io devo svolgere 
il mio ruolo di signore. Mi spiace.
Mas tenho minha posição como
lorde do castelo. Sinto muito.