Dr. STONE manga volume 2 features story by Riichiro Inagaki and art by Boichi.

Senku, Taiju and Yuzuriha are well on their way to crafting gunpowder when they spot smoke far off in the distance. Convinced that it’s a sign of other humans, Senku takes a huge risk by sending up a smoke signal of their own. Meanwhile, Tsukasa is determined to stop their progress on gunpowder, and his arrival on the scene could spell the end for our heroes!