Zombie Apocalypse Simulator

System+No nonsense After Japan discharged nuclear wastewater, the water quality was constantly tested, and the zombie virus was also detected in advance. Before the zombie virus broke out, Japan had already vaccinated the entire country. And this vaccine that targets the Japanese constitution has saved all Japanese people. However, after the zombie virus broke out, the world fell into complete chaos... A zombie virus breaks out in the world, and everything in the past becomes empty in an instant. For ten years, I relied on my brothers to survive. My brother was killed and the system was given to me. Zombie apocalypse! My system has no limit!