Four Seasons; Three World Wars

The First World War broke out in the early 23rd century and lasted until the middle of the 23rd century. Then the nations rested for a century. The Second World War broke out in the mid-24th century and ended in the early 25th century. However, because Country RB broke its promise and could not use nuclear weapons, a nuclear war broke out. In this nuclear war, the human population was rapidly reduced from 6.6 Billion to 600 million. Many of these 600 million people had genetic mutations due to nuclear radiation. Later, some people even released biochemical viruses on this earth that was almost almost inhabited. Let's see how the protagonist survives and solves crisis after crisis... This novel and its characters are purely fictitious. Any similarity is purely coincidental and should not be imitated.