Titan City Defense Force

In this world, something called the Titan Core will appear anytime and anywhere, and creatures called Titans will be summoned with the Titan Core as the center. At first, mankind retreated steadily and lost 70% of the land. It was not until the establishment of a hundred-meter city and an anti-Titan city defense force that mankind had the ability to protect itself. Three city defense troops, Wang Peng, Zhao Xuan and Chen Jun, stood on the 400-meter city wall and looked into the distance, not knowing the fate of mankind.