Dr. Stone. Volume 16: Riichiro Inagaki

Imagine waking to a world where every last human has been mysteriously turned to stone...
One fateful day, all of humanity turned to stone. Many millennia later, Taiju frees himself from the petrification and finds himself surrounded by statues. The situation looks grim-until he runs into his science-loving friend Senku! Together they plan to restart civilization with the power of science!
The battle between the Kingdom of Science and Petrification Kingdom is down to a mano a mano match between Senku and Ibara! With his petrified friends` spirits supporting him, can Senku finally get his hands on the all-powerful petrification weapon?! Later, a shocking revelation about the mysterious "Why-Man" leads the Kingdom of Science on a new adventure!