The world of Dr. Stone features Senku Ishigami as he strives to rebuild humanity from scratch after the whole world is petrified. While the genius scientist Senku may be the star of the show, his father, Byakuya Ishigami, played a pivotal role in shaping his son's intellect and determination. Byakuya was a man of great intelligence and accomplishment, with a wealth of knowledge and experience that would prove invaluable to Senku as he fought to rebuild civilization from scratch.