Sakura Sakurakouji may seem like a frail and demure girl, but in reality she’s a powerful martial artist with an unmatched sense of justice. One day, on her way home from school, she witnesses a boy murdering several people with bright blue flames. That boy is Rei Ogami, a merciless assassin known as a "Code Breaker", and the latest student to join Sakura’s class! While Rei appears to be the perfect gentleman at school, in truth he lives by the principle of "an eye for an eye" and is hired to target and dispose of criminals who have escaped the law. With everyone oblivious to his true nature, only Sakura knows what he really is and his remorseless feelings towards what he does. But despite his icy heart and his threat to burn Sakura and everyone around her should she reveal his secret, the righteous teen can’t help but feel that there’s more to Rei than meets the eye...
I found the female leads of these were similar. There both physically strong and successful girls and they seem to share a strong sense of justice. Another thing I found similar is that they are both against an enemy much bigger than themselves.
Also, over the course of both serieses, the form tight bonds with those fighting along side them.
In the year 200X, World War III began. Special bombs destroyed parts of cities such as Tokyo, leaving decimation in their wake. Decades later, ground zero in Tokyo – an isolated section known as the Black Spot – remains an enigma. Its residents known as Needless possess strange powers such as the ability to control fire or telekinesis, and are constantly hunted down by Simeon, a large pharmaceutical company with sinister motives and Needless of their own to do their bidding. Young Cruz is part of a resistance to fight against Simeon and its Needless figurehead leader, Adam Arclight; but after the resistance is brutally killed by Simeon’s minions, he finds himself saved by a motley crew: Professor Gido, scantily-clad Eve and badass Blade. Together, the gang fends off Simeon’s attacks and tries to discover the truth behind the corporation’s actions. What is Simeon really after, and why do they desperately want to find Fragments?
The setting is in both anime really similar, in both there are people that have some special kind of powers.
Also the main character in both of them has to face an strong evil organisation which kind of acts all secretly and sneaky and tries to find ways to create the true superhuman.
Also the two main characters have kind of similar power, that they are able to obtain the powers of their opponents.