Sigma City 3

An artificial virus designed to give people superpowers has had catastrophic effects. While it has given women the powers intended it has decimated the male population and transformed wild animals into monsters. Now female dominated, humanity has retreated to fortified cities. The best defence against the monsters are the most powerful superpowered women - the Sigmas!

David is the world's only male Sigma. He and his growing Family of superpowered girls face ever greater challenges. The monsters they face are more powerful and fearsome than ever. Their enemy has sent an army of monsters larger than any seen before to destroy their city! Even with reinforcements and a new Sigma with amazing powers will they be able to survive? Will they be able to find a way to take the fight to their enemy and destroy him forever!

Reader caution, this is an adult novel with harem and bdsm themes.