I Found Beauties At Doomsday

*After Earth was hit by an asteroid, the special radiation turned a large number of humans into zombies without any antidotes, and only a small number of humans were immune to this radiation.
Zombies were hard to kill, and normal people were constantly infected and destroyed.
After the main character woke up, he found himself in this post-apocalyptic world.
The only chance for him to survive was to carry out the system's mission - to save the beauties!