Kagura and Yomi are two girls who have a bond that cannot be broken. While once they fought side by side against the supernatural forces that threaten the planet, fate had something different in store for these star-crossed companions. Yet to understand the present, one must first experience the past – a time before Kagura’s involvement with the Supernatural Disaster Prevention Agency. Always cheery and good-natured to a fault, the young Kagura first meets Yomi when she is invited into her home. Over time, the two battle malicious spirits and grow closer together – but soon, more terrifying foes begin to reveal themselves. A swarm of glowing blue butterflies and a mysterious stone are harbingers of darker things to come, and one thing’s for sure: Kagura and Yomi will never be the same.
In a futuristic and wild west-inspired Japan, there are only two rules: the Number 1 rules the world and only the Number 2 can challenge him; these ranks are worn with pride in the manner of headbands. In these harsh times, Afro is a samurai who is on a mission for revenge – an evil gunman killed his father to become the Number 1, and it’s up to Afro to take him down in a shower of blood and entrails. He has mastered the art of the sword and become Number 2, but many others want to hold his title and the title of Number 1 for themselves. With competition and sword fights at every turn, can Afro finally exact his revenge?
If you enjoy awesome sword fighting and bloody scenes, both series would be perfect choice. Ga rei is, however, somehow more realistic than Afro Samurai. Both series show drama of main heroes.
Life continues as ‘normal' for Birdy and Tsutomu. Though they still co-exist in the same body, Tsutomu is able to focus on his studies while Birdy keeps up with her celebrity job and Federation Investigator duties. However, things become more complicated when a transport ship housing prisoners connected to the Ryunka incident is hijacked. The aliens on board escape to Earth and blend in with the human population, and it's up to Birdy to capture them unharmed and escort them back to headquarters. Yet Birdy soon discovers that there are other forces involved, and it'll take everything she's got to bring these criminals back alive!
In the near future, demons with the ability to fuse with machinery and infest corpses have begun terrorizing mankind. Dubbed 'Amalgams', no one knows how they are created, or where their abilities originate from. As the random outbreaks continue, the general population begins to panic, demanding protection from these vicious beasts; enter XAT, a military unit created solely to counter the Amalgam threat. Despite being a highly skilled unit, however, they find themselves hard pressed to contain the threat, let alone subdue it. To compound matters further, a new type of Amalgam surfaces that proves even more devious than the rest - one made from the human, not machine. Yet all is not lost, two of these new Amalgams - the feisty Gerd and the mysterious Blue - actively oppose the others. With the odds stacked against them, will they be able to protect mankind while simultaneously being shunned by it?
Rin Okumura is a seemingly ordinary boy living at the Southern Cross Boys' Monastery. One day, however, Rin encounters a boy who has been possessed by a demon. Amidst the struggle, he not only awakens latent powers sealed within him, but also learns that he is the son of Satan! No longer able to stay under the protection of the church and with his very existence straddling the line between human and demon, Rin decides to fight against his parentage and joins the True Cross Order as an exorcist. Now, the teen must attend the True Cross Academy and begin special exorcist training alongside his new comrades all while keeping his identity a secret; but can the son of Satan really become a true exorcist?
Japan's hottest service is Nicaea, a website that sends your friends a picture of your death before it happens. Daichi and Hibiki are two teens who didn't expect Nicaea to actually be real – that is, until the boys receive an email about their demise, and die shortly after. On the brink of going to the beyond they're given a choice: expire, or have a second chance at life. And so the two awaken to discover the city's been destroyed and they now have the ability to summon demons – an ability that a secretive branch of the government insists they use to help combat an imminent threat. For unless summoners like the teens put a stop to otherworldly invaders destroying the planet, the world will soon disappear...
Both animes are about people summoning demons to fight with other demons and the relationships between them and the value of friendship... in a way you can say that Devil Survivor is a mix between Ga-rei Zero and Guilty Crown because of the love/hate relationship between the two main characters (Yomi/Kagura, Gai/Shuu, Yamato/Hibiki).