Female protagonist who traveled from the end of the world to Blue Star over a decade ago. She is an academic genius who consistently scores full marks in physics. In the novel world she now inhabits, she is destined to be a cannon fodder character whose achievements will be stolen by the female protagonist. She has survival instincts from her previous life in the apocalypse, suffers from abnormal drowsiness during exams due to the novel's plot, and discovered a mysterious doomsday survival game called End of the World Ability on her phone. She is protective of her parents and determined to prevent the female protagonist from harming her family.
