Earth II - Books 5 & 6

In the fifth and sixth books of the Virus/Earth II series, humanity grapples with the aftermath of an alien virus that has reshaped their world, while navigating threats from an intelligent, malevolent computer named Julius and complex relations with neighboring civilizations. As survivors acquire advanced technology and face new conflicts, they must uncover hidden threats and forge precarious alliances to ensure their survival in a vastly changed galaxy.