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.
Senku...
...سينكو
Senkū …
Senku…
Senku…
Senku…
Senku.
Senku...
Сэнку…