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.
Byakuya and his people 
must have collected it.
.لا بدّ أنّ بياكويا ومن معه جمعوه
Den haben Byakuya
und die anderen gesammelt.
Las recolectó Byakuya.
Las recolectó Byakuya.
Byakuya et ses collègues
l’ont récolté…
L'ha raccolta il gruppo di Byakuya.
Byakuya e seu povo devem ter reunido.
Его собирали Бъякуя с товарищами.