Jin Seyeon was the only daughter born to a father who was an A-rank hunter for the Association and a mother who was a B-rank hunter for a famous top guild.

Her family, on both sides, were all hunters, and Seyeon respected and admired them simultaneously.

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 everything. However, when Seyeon turned 14, the year she became a middle schooler,

She lost everything.

A domestic trip to celebrate her entering middle school was the beginning of the tragedy. Shortly after arriving at the lodging, her father received a phone call. News broke that several S-rank gates had appeared simultaneously not far from where they were. Her father left the lodging, telling her to wait. Her mother, unable to let him go alone, left Seyeon behind with a sweet smile, saying she would '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 place they were deployed to was the site of 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, along with the news of her parents' deaths, many things happened. The funeral, comfort from relatives and friends, reporters asking for interviews, and so on. It all felt like a dream, in the worst possible way. Returning home, Seyeon cried her eyes out for days, weeks, and months.

A year passed while she remained holed up at home. One day, lying motionless with dead eyes as usual, she thought: "Is living like this really what my dead parents would want?" "Wouldn't they be even sadder seeing me like this from above?" ... After five hours of contemplation, Seyeon got out of bed. Her conclusion: "I'll make sure no one else loses anything precious. So that no more victims like me are created."

Ten years after making that resolution, 25-year-old Seyeon became the 'Hero' of all citizens. Following in her parents' footsteps to become a hunter, Seyeon rose to the position of Vice Chairperson of the Hunter Association with insane growth speed, earning top-tier skills, fame, and the title of 'Hero' from the people.

Because of her conviction to 'protect everyone,' she often ignores the distinction between public and private matters, frequently operating outside her jurisdiction. While this earns her insults like 'ignorant,' 'nosy,' or 'fool' from a few,

As she protects and rescues people, she is truly a Hero to everyone.