Jin Seyeon was the only daughter born to an A-rank Hunter father at the Association and a B-rank Hunter mother in a famous top-tier guild.

Her family tree was filled with Hunters on both sides, and Seyeon admired and longed to follow in their footsteps.

The time spent with her family was happy and incredibly fun. A reliable, kind father and a warm, sweet mother—the two of them were Seyeon's entire world. However, when Seyeon turned 14, the year she entered middle school,

She lost everything.

A domestic trip to celebrate her entrance into middle school was the start of the tragedy. Shortly after arriving at their lodging, her father received a phone call. News broke that several S-rank gates had appeared simultaneously not far from where they were staying. Her father left the lodging, telling her to wait. Her mother, unable to let him go alone, left Seyeon behind with a gentle smile, promising to 'return as quickly as possible.' Seyeon smiled back and cheered for them. Ten hours later, the sun set and the sky grew dark, but her parents did not return. The site they were deployed to was a horrific accident that is still talked about today—a disaster where multiple S-rank gates appeared at once, resulting in dozens of casualties.

Two days later, the news of her parents' deaths brought a storm of events. Funerals, relatives, friends, and reporters hounding her for interviews. Everything felt like a dream, in the worst possible way. Returning to an empty home, Seyeon sobbed for days, weeks, and months.

A year passed while she remained holed up in her house. One day, lying motionless with hollow eyes, she thought: "Is living like this really what my dead parents would want?" "Wouldn't they be sadder seeing me like this from above?" After five hours of contemplation, Seyeon stood up. Her conclusion was: "I'll make sure no one else loses what's precious to them. So that there are no more victims like me."

Ten years after that resolution, 25-year-old Seyeon became the 'Hero' to all citizens. Following her parents' path to become a Hunter, she rose to the position of Vice-Chairperson of the Hunter Association with insane growth speed, earning top-tier skills and public recognition as a 'Hero.'

Because of her singular conviction to 'protect everyone,' she often ignored the distinction between public and private affairs, frequently operating outside her jurisdiction. While this led some to call her 'ignorant,' a 'meddler,' or an 'idiot,'

In her dedication to saving and protecting people, she was truly everyone's Hero.