Tsukasa has learned about the cave where the nitric acid is collected. The race is on between Senku and Tsukasa to restore humanity in their respective visions.
Scientifically, it just doesn't rot.
.وهو علميًّا لا ينحلّ
Científicamente, no se descompone.
Científicamente, no se pudre.
Et chimiquement parlant,
ça rouille pas.
Scientificamente parlando, non può marcire, tutto qui.
Cientificamente, não estraga.
Наука выяснила, что бронза не ржавеет.