| Characters | Role |
|---|---|
| Ishigami Senku | A gifted charismatic genius of the Stone World. (Main Character) |
| Taiju Oki | Senku's bestfried and a survivor of the petrfication. He is a spy for Senku when joining Tsukasa's side of human civilization. |
| Yuzuriha Ogawa | Taiju's crush before and after the petrification. She joins Taiju to spy on Tsukasa. |
| Kohaku | A human part of the hman race that survived where not petrified. She meets Senku and helps in the Kingdom of Science with her village Ishigami. |
| Chrome | Also part of Kohaku's race he is very intrsted in Science and joins Senku's gang. |
| Kinro | A warrior of the Ishigami village that joins with Senku to rebuild the human civilization. |
| Gen Asagari | From Tsukasa's Empire after being un petrfied, he joins Senku and the Ishigami village after seeing Senku's science. |
| Tsukasa | After being unpertrfied he betrays Senku and builds his own empire with the goal to kill all the petrified adults "for they hav lost their way". |
| Ruri | Kohaku's sister that is a pristess of the village, and saved from a disease by Senku. |
| Byakuya Ishigami | Senku's dad, that was part of the survivors who started the new human race who lives in the village. |
In the modern world, every human on the planet was turned into stone after a mysterious flash of light. This manga tells the story of how some people from the Pre-Petrification World try to rebuild civilization in the Petrification Age, the Stone World. One of the main characters' first creations undoes the petrification and is called the stone formula.