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?
Kiba is a wolf, one of the last of his kind, and his dream is to find Paradise in a world torn asunder by war. Cheza, the legendary Flower Girl, can lead him to Paradise, but there are others who desire her, and help from other wolves at his side may not be enough. Driven by his noble spirit, he will not forsake his quest.
From what I've seen of No. 6 it appears to have the same dark atmosphere as Wolf's Rain did, and Kiba and Nezumi definitely are cut from the same cloth. Shion continuously acts in accordance with his naivety like Toboe and Nezumi tries to make him see the horrors of the real world. Also, it's Nezumi feels for Shion, but refuses to admit it.
Both by Bones and both are the struggle of the naive idealist and the battle tested nihilist against the world.
Hakaze, princess of the Kusaribe mage clan, has been betrayed and marooned on an island by her own people. They seek to revive the Tree of Exodus, an incomprehensibly powerful entity of alien origin, to save the world from the tyranny of its antithesis: the Tree of Genesis that powers their magic. Hakaze, however, believes their efforts put humanity in jeopardy; and with her power limited, she can only reach out to the world to beg for aid. Her call reaches Mahiro Fuwa, a young man grieving the mysterious death of his sister, Aika. He and his friend Yoshino agree to help - on the condition that Hakaze track down Aika's killer with her magic. The deal is made, and the battle that will determine civilization's fate is begun: but who will play the part of its villain, and who its savior?
Two young men get wrapped up in strange happenings that threaten their lives and the world around them. The main characters in both series are friends, but at the same time, they're entirely different. What they want is different. How they want to achieve it goes against the others beliefs. Can they put their differences aside to work together and save the world, or will their bonds fall apart? Will there be betrayal, or worse yet, death? You have to watch both to find out. Zetsuen no Tempest and No. 6 are not entirely identical, but when it comes to their characters, they're quite similar.
In the year 2016, a catastrophic incident at the Odaiba nuclear power plant contaminated the city with radiation and turned Tokyo into a ghost town devoid of life. 20 years later, Japan still struggles with the environmental consequences of that fateful day, and actively looks for survivors using Coppelions: genetically-engineered, radiation-resistant girls who scour the streets when SOS calls occur. With military support and funding to back them up, these young ladies continue to explore Tokyo and discover just who, and what, managed to survive.
These are both post apocalyptic series that focus more on drama and character development than plot. Both these shows try to develop their characters through their experiences in worlds that have been destroyed and are in the process of rebuilding.
Coppelion is about three teenage girls with super powers whereas No. 6 is about a pair of guys that fall in love during their time together.
No. 6 is better with character development, drama, world building and just about everything else, except animation. It also has really nice and believable romantic development between the two male leads. The only problem with No. 6 is it's horrible ending.
Coppelion on the other hand is melodramtic with lots of misplaced comedy and dramatically convenient events happening all the time. Also, while the animation at the start of the anime is pretty decent, it steadily drops in quality throughout the series.
However, if your looking for post apocalyptic drama about the rebuilding and restructring of society then both these titles fit the bill.
In a futuristic world almost barren of life, mankind is confined to mechanized domed cities where A.I.’s control all aspects of life. In this world, humans are no longer born, they are manufactured in a production line; and alongside them live androids known as autoreivs. Within one of these domed sanctuaries named Romdeau lives Re-l Mayer, one of a few citizens who aren’t entirely prevented from thinking. Her grandfather's prominent position and the affection of the scientist Daedalus have left her more free will than is normally allowed, but Re-l has started to question the sanctity of the city and the citizens' perfect way of life. With mysterious beings known as proxies causing havoc and a man named Vincent causing great influence on her life, Re-l must travel outside of the city to find the answers she seeks and discover the mystery behind "the awakening".
A dystopian controlled society masquerading as a utopia is pretty much a science fiction trope. Nevertheless, there are many and varied ways to present the theme. These two anime are quite different takes on a very similar topic.
One thousand years from now, humanity live pastoral lives aided by psychokinetic powers and the subservient Monster Rats. Saki Watanabe has just come of age, and her power has been reined in through meditation and hypnosis. She joins the Unified Class, where she will learn about her power and the world around her; yet so much of the truth is kept hidden. Her friends Shun, Mamoru, Satoru, and Maria share in her curiosity, and decide to go out of their way to seek the truth. But will the secrets of the past and present turn out to be things that Saki really wants to know?
No. 6 and Shin Sekai Yori tell stories of kids who discover the horrific price of living in a peaceful society. In a world where the truth is closely controlled, the characters in both shows struggle to uncover reality and discover things about their friendships and childhood loves in the process.