Madame Curie is a fictionalized version of the historical scientist Marie Skłodowska Curie who resides in the mysterious city of Galihabara, a place where famous scientists from the past coexist. In this setting, she runs a pension and a radium hot spring, both powered by the radioactive element she discovered. She also operates a coffee shop and a spa that rely on her scientific knowledge of radium. Her establishment serves as a home base for the protagonist, Marika, whom she takes under her wing. Madame Curie acts as a maternal figure, providing lodging, guidance, and gentle encouragement as Marika learns about science in order to find her way back home. Her personality is marked by intelligence, kindness, and a passionate dedication to her work, but she also has a temper and can become easily angered when provoked. She is logical, analytical, and independent, often focusing intently on her experiments and research. Despite her occasional sternness, she cares deeply for those around her and is committed to using her discoveries for practical and beneficial purposes, such as running her hot spring and spa. Her role in the story is primarily that of a supportive mentor and caretaker, helping Marika navigate the wonders of Galihabara while also interacting with other historical figures like Galileo and Newton. While her character shows little dramatic development over the course of the series, she remains a steady, nurturing presence whose scientific expertise and maternal warmth are essential to Marika’s journey. Her notable abilities include her profound understanding of radioactivity, her skill in isolating and applying radium for everyday uses, and her capacity to run a small business that blends science with hospitality.