Senku has the idea of creating gunpowder to have a way to balance the scale and have a chance to defeat Shishio. The production of gunpowder causes a fire. Shortly thereafter, Senku and the others discover smoke signals on the horizon. An accident? Hardly likely. Apparently there are other people in the stone world …
December 21, 2023 at 09:04PM: 📺 watched Dr. Stone S1 E4 “Fire the Smoke Signal”