Marina Kirarazaka

Marina Kirarazaka (雲母坂 まりな Kirarazaka Marina) is the tritagonist of Takopi's Original Sin series. She is a schoolmate of Shizuka Kuze, harboring a burning hatred toward her, which fuels her bullying and emotional abuse of the girl at school. This animosity stems from the breakdown of Marina's family, specifically the collapse of her parents’ relationship, as her father was involved in an extramarital affair with Shizuka’s mother, an event that deeply impacted Marina’s home life and emotional well-being.