4.426 out of 5 from 217 votes
Sion is intelligent, highly educated and lives a privileged life within the walls of No. 6, one of six city-states that was built after the world was destroyed from war. But Sion's comfortable existence changes forever when he meets Nezumi, an escaped convict, on the eve of his twelfth birthday. Due to his assistance in keeping Nezumi safe, Sion loses his rights and is forced to live in the lower town, where he becomes a normal citizen. Four years later, Sion finds himself back in Nezumi's company and in the midst of a dangerous conspiracy that leaves a trail of bodies in its wake. What is really going on in No. 6?
The island of Ilegenes has made huge technological advances in the fields of cybernetics and genetic modification, earning it the nickname the "Genetic Sodom" for veering so far off the path of nature. These technologies are easily available to the wealthy through the thriving black market, which not even the government has the power to oppose - a fact that the young Fon Fortinbras Littenber is made keenly aware of after his parents are murdered for expressing anti-cloning sentiments. Now, the boy attends an elite military university, where he plans to work his way up through the system in order to re-structure the corrupt government and destroy the black market. But despite his hatred of cloning and human modifications, his impossible eye color and aptitude at academics and sports lead the other students to suspect that he is actually a modified human...
No. 6 and Ilegenes have a remarkably similar feel. Both of these sci-fi manga feature a cast of pretty boys (though they're definitely not yaoi) in a futuristic, dystopian setting. They're also rife with conspiracy, and are fairly dark and moody. If you liked one, you'll probably enjoy the other.