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.
I don't know what you'll need in the future.
.لا أعلم ما الذي ستحتاج إليه في المستقبل
Ich weiß nicht, was du
in der Zukunft brauchen wirst.
no sé qué necesitarán en el futuro.
no sé qué necesitaréis en el futuro.
J’ignore ce dont tu auras besoin.
Non ho la più pallida idea 
di cosa ti servirà nel futuro.
Eu não sei do que vai precisar no futuro.
не знаю, что тебе понадобится.