Girl Salvation Agency

This world has been destroyed.Because of Won Won-hyeon, world number one.He is the greatest hero ever born to mankind and the worst traitor to mankind.I thought it was ...?"...even if you weren't the last one."He saved me and died just before destruction.And I suddenly went back to prevent the conspiracy!Becoming the youngest S-class hunter at 8 years old!Great,I will make Won Won-hyeon's wish come true on his behalf.We will save you starting today!+