Kohaku has located the treasure left behind by Byakuya and the others, but it's encased in concrete. Senku has to devise a plan to quietly get at the contents inside, so as to not alert the guards.
But if I were to do that in the 
middle of the enemy fortress...
...لكن إن فعلت ذلك وسط حصن العدو
Aber wenn ich das mitten
in ihrer Festung machen würde …
pero si hago lo mismo
en pleno territorio enemigo…
pero si hago lo mismo
en pleno territorio enemigo…
Mais si je fais ça
au cœur du repaire ennemi…
ma se lo facessi adesso, 
nel bel mezzo del covo nemico...
Mas se fizermos isso no meio 
da fortaleza inimiga...
Но повторить это посреди
вражеской крепости…