Apocalypse I Synthesized My Zombie Sister into a Queen

Three years have passed since a strange purple fog transformed half of the world's population into zombies, and survivor Jack has been fighting to stay alive in the ruins. Then a mysterious system awakens inside him, granting the power to synthesize and evolve the undead. When he finds that his younger sister Mia has also been infected, he refuses to put her down. Instead, he makes a promise to strengthen her step by step until she remembers who she used to be.