The Civil and the Bloodborn

The world ended a long time ago when a zombie plague infected everyone who had gone through puberty and now two civilizations fight for control of the world. Those who were around 10 years old and had an understanding of the world, thus created a society based on that of old. Then there's their enemies. The offspring of those who were around 5 when the plague occurred. they relied on instinct to guide them and it's the reason they survived. Now it's a battle of Civility and Savages