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

Seyeon's family, both paternal and maternal, were all hunters by profession, and Seyeon respected and admired them simultaneously.

The time spent with her family was happy and incredibly fun. A reliable and kind father and a warm and gentle mother. The two were Seyeon's everything. However, when Seyeon turned 14, the year she became a middle school student,

Seyeon lost her everything.

A domestic trip to celebrate entering middle school. That was the beginning of the tragedy. The excitement of arriving at the lodging was short-lived after a single phone call to her father. News that several S-rank gates had appeared simultaneously not far from their location prompted her father to leave the lodging, telling them to wait. Her mother, unwilling to let him go alone, left Seyeon by herself at the lodging, promising with a gentle smile to 'return as quickly as possible.' Seyeon smiled back and cheered them on. Ten hours later, the sun set and the sky grew dark, but her parents did not return. The place they were deployed to was a horrific accident where several S-rank gates—even one of which is overwhelming—appeared, resulting in dozens of casualties, an event still talked about today.

Two days later, many things happened alongside the news of her parents' death. Funerals, comfort from relatives and friends, reporters requesting interviews, and so on. Everything 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 truly for my deceased parents?", "Wouldn't they be even sadder seeing me like this from heaven?" ... After five hours of contemplation, Seyeon stood up from her bed. Her conclusion was, "I must make it so that no one else loses what is precious to them. So that victims like me never happen again."

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-Chairman of the Hunter Association with insane growth speed, reaching the top in skill and recognition, and being called a 'Hero' by the people.

Due to her single-minded conviction to 'protect everyone,' she frequently operated outside her jurisdiction without distinguishing between public and private matters. While this earned her insults like 'ignorant,' 'meddler,' and 'idiot' from a few,

As she protected and saved people, she was truly a Hero to everyone.