Start Building a Doomsday Buffer Zone from the Fallen Manor Owner

Because of an accident, Ryan traveled to a chaotic world. Human civilization in this world is constantly attacked by demonic waves and natural disasters, and most of the human gathering places have been reduced to ruins. Except for a few human gathering places, the rest of the world has become a demonic realm. In order to better resist demonic tides and natural disasters, humans have established buffer zones one after another. In order to realize his dream of becoming the owner of the buffer zone, the original owner spent all his savings to buy an abandoned buffer zone. And when he took over this buffer zone, he realized that he had been completely deceived. This buffer zone had long been abandoned, without any fortifications, only two abandoned buildings and a deserted area. What's worse is that a week later, a demonic wave is about to pass through this buffer zone. At this time, even if Ryan has the ability to rebuild this buffer zone, there is no time! In despair, Ryan awakened the manor master system. Complete system tasks, collect monster crystal cores, and get more system points. Powerful manor guards can be exchanged for system points. Of course, building a sanctuary area also requires construction and recruitment. As a result, Lane Manor continued to grow, and it gradually changed from the original dilapidated buffer zone to the hope of human survival!