Dr. Stone - Volume 4

Senku and the partisans of the Kingdom of Science are moving step-by-step to produce sulfa drugs, the "universal cure" meant to heal Ruri.

In search of sulfuric acid – the most problematic of all the ingredients – they venture into an extremely dangerous area, risking their lives!

Meanwhile, in the village, an important tournament is being prepared: the position of chief is at stake!!