Girl Salvation Agency

The world has ended. Because of World No. 1 Won Jeong-hyun. That guy is the greatest hero humanity has ever produced, and the worst traitor... Or so I thought? "... If the last person hadn't been you." He saved me right before the apocalypse and died. And to stop the conspiracy, I suddenly regressed! As the youngest S-Class Hunter at the age of 8! Alright, I will fulfill Won Jeong-hyun's wish instead. Starting today, I will act as the proxy for salvation!