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.
And it's useless looking
around the premises
ولا طائل من البحث حول المبنى
Es bringt nichts, hier in der Gegend
nach Unmengen von Wasser zu suchen.
Y es imposible
echarse tanta agua aquí dentro.
Y es imposible echarse tanta agua
aquí dentro.
E non serve a nulla cercare
 grandi quantità d'acqua nell'area del castello!
E é inútil procurar aqui dentro
И искать здесь много воды —
бесполезное занятие.