At Giyu Tomioka's urging, Tanjiro heads for Mt. Sagiri with his sister Nezuko who's been turned into a demon. During the night, Tanjiro catches the smell of blood from inside a temple. He enters, thinking that someone might be hurt, only to come upon a man-eating demon. When the demon attacks, Tanjiro manages to fight back with his hatchet, but the demon's strength is overwhelming. Just as the demon is about to finish him off, Tanjiro is saved by none other than.
Event Year: 2019
Stone World The Beginning
Shishio is determined to end Senku's life if he does not promise at that moment that he will abandon his idea of recovering civilization as it was before the incident.
Fire the Smoke Signal
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 …
Weapons of Science
Senku does not trust the motivation of Shishio, so he will try to hide his plans from a new and unforeseen enemy for his plan to revive civilization.