Senku runs into an even deadlier threat than Tsukasa in Dr. Stone: 1 / 8
Poisonous gas from a sulfuric pool -- an instant killer. 2 / 8
The group need sulfuric acid in order to make a cure-all drug. 3 / 8
Senku silvers Ginro's spear, which turns black when the gas is present. 4 / 8
Ginro is terrified by the poison pool when this happens... 5 / 8
... and Senku realizes they need gas masks to complete their mission. 6 / 8
Though he tries to go alone to test the masks, Chrome insists on coming... 7 / 8
... and despite a close call, they succeed in overcoming their "biggest hurdle." 8 / 8