My Sister Was Murdered, and I Became an SSS-Rank Mutant Zombie Emperor!

Ten years ago, a global zombie crisis erupted. Mutant beasts evolved at a terrifying rate, and humanity teetered on the brink of extinction! Chen Yuan was the first person in the world to awaken an SSS-rank ability. He chose to step forward, fighting the zombie hordes, slaying mutant beasts, and defending cities on the verge of collapse! But after Xu Yuan spent ten years protecting humanity and shedding blood, sweat, and tears, his only younger sister was taken away for research and died in an accident during an experiment! Xu Yuan froze. He never imagined that the younger sister he loved most would die at the hands of the very humans he had spent ten years protecting! Xu Yuan's heart twisted with anguish. His eyes bloodshot with fury, he seized the blood of an SSS-rank Zombie Emperor and injected it into his own body! That day, the sky fell into endless darkness. A blood-red crescent moon slowly rose, and countless zombies howled with excitement! When humanity's strongest SSS-rank ability fused with the purest SSS-rank Zombie Emperor blood... a terrifying phenomenon spread across the globe! Three months later, an endless tide of zombies swept in, and a boundless wave of resentment engulfed the entire city! That day, the people who had killed his sister were devoured until not a scrap of flesh remained, while the true culprits begged desperately for mercy! But Xu Yuan merely watched in cold silence, his scarlet eyes calmly taking it all in. He was no longer an SSS-rank human ability user. He was the Blood Moon Zombie Emperor, ruler of billions of zombies!