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'm utterly shocked, kids.
.لقد تفاجأت يا أطفال
Mein armes, altes Herz
macht das nicht mehr mit.
Qué sorpresa me llevé.
Menuda sorpresa acabo de llevarme.
Voyez-vous, je suis très surpris !
Insomma, così farete prendere un colpo
 a questo vecchietto.
Eu estou chocado.
Дяденька поражён до глубины души.