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.
Don't forget the first rule,
even if it kills you.
،إيّاكم أن تنسوا القاعدة الأولى
ولو عنى ذلك موتكم
Ihr solltet aufs Verrecken nicht
die erste Regel vergessen!
è che non dovete mai dimenticare la prima, costi quel che costi.
...não se esqueçam da primeira
regra, mesmo que isso os mate.
Даже при смерти не забывать
о первом правиле.