Kohaku Ishigami is a brave and skilled warrior from the anime series Dr. STONE. She belongs to the Ishigami Village, a community of people living in a post-apocalyptic world where humanity has been petrified for thousands of years. Kohaku is known for her exceptional combat abilities, agility, and keen sense of observation. She becomes a crucial ally to Senku, the protagonist, as they work together to rebuild civilization through the power of science. Her role in the series is vital as she bridges the gap between the villagers and Senku's scientific endeavors, showcasing determination and loyalty.