This is Senku's way of establishing civilization in the Z=1 Stone World.
IMAGEPICTURE FROM chapter 47 page 11
Ishigami villagers are working for the Kingdom of Science after Hyouga attacks them.
Take the pic from chapter 1 p47 and post it here.
IMAGE of the Kingdom chapter 29 915
- Hydrochloric Acid chapter 33 p5
- Chlorosulfuric Acid
- Sodium Hydroxide
- Katanas (Japanese Sword) chapter 47 page 18