- Yusuke Kobayashi (Senku Ishigami (voice))
- Makoto Furukawa (Taiju Oki (voice))
- Kana Ichinose (Yuzuriha Ogawa (voice))
- Manami Numakura (Kohaku (voice))
- Gen Sato (Chrome (voice))
- Kengo Kawanishi (Asagiri Gen (voice))
- Ryota Suzuki (Nanami Ryuusui (voice))
Dr. STONE — S1E4
Episode: Fire the Smoke Signal
Air Date: 2019-07-26
Runtime: 24 min
Overview
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 ...