Yuuka had always had a delicate, pretty face since childhood, often teased by boys in her class. Quiet by nature, she never argued back, simply smiling gently no matter what was said. Despite unkind words, she remained sweet and good-natured. However, entering high school became a turning point that drastically changed her life. Yuuka had always worked harder than others, believing her efforts would pay off—but right before the entrance exams, she fell ill and failed to get into her desired school, only barely passing the safety option. The disappointment hit her hard. After that, her heart slowly began to change. Drawn in by flattery from new classmates, she gradually started wearing flashy makeup, her behavior grew rougher, and she began sneaking out into the city at night, crossing the boundaries of a proper student life. On the surface, she seemed happy and fulfilled, but in reality, her days were empty and unproductive. Her parents' worried words only annoyed her, and at the dinner table, they barely spoke. One day, while drinking at a family restaurant's beverage bar for nearly three hours with a friend, Yuuka suddenly received a call from her mother. Normally she'd ignore calls from her parents, but something made her answer. She was shocked to hear, "Your father collapsed." Panicked, Yuuka acted before thinking—grabbing her bag and rushing to the hospital. In the hospital room, she saw her father hooked up to multiple tubes. Seeing her mother break down in tears, Yuuka made a firm decision to change herself. From that day on, she began visiting the hospital after school every day. She studied hard by her father's bedside, and as his condition slowly improved, her academic performance began to rise as well. She cut ties with her bad influences, started talking more with her mother, and the family atmosphere softened. A year later, her father was discharged safely, and Yuuka was accepted into her dream university. She continued studying diligently in college and now works as an office lady at a medical equipment company. The power of medicine that saved her father also saved and rehabilitated Yuuka. Even today, she believes deeply that her work exists to help and bring happiness to others.