"Are you there?" This is the question that the aliens always demand before they attack. The quiet island of Tatsumiyajima is secretly the last line of defense against mysterious invaders. In a quiet and rustic villiage, children were raised without any knowlege that they were born to pilot the Fafnirs, giant robotic war machines of terrible powers that are the only thing that can defend all they hold dear.These children's struggles will be the only thing that can hold off an enemy that attacks both our bodies and our sense of identity...
Both Fafner and Aoki Hagane no Arpeggio are about alien races who come to earth seeking to learn more about humanity through fighting. In both anime, humanity are close to absolute ruin. In the process of this intermingling, the alien race discover humanities free will and are transformed by it. They then discover the value of human emotions like love and how having something to save causes an individual to exceed normal limitations. The aliens after engaging in warfare and coming into contact with humans develop a freewill of their own and a seperate distinct identity capable of choosing there own paths leading to a destiny of their choosing apart from a collective or progammed one. In both anime the aliens appear as machines and can also assume human appearance.
These two have a slight military feel that, reminded me of the Second World War, with Girls und Panzer having Tanks and Arpeggio of Blue Steel Naval ships from that era. Cute girls and tanks, cute girls and Warships. What is there not to like.
Far, far away in a distant time, there is a tribe of people called the Golden Tribe who have the ability to create stars and foretell the future. They gave out a warning to those who have yet to mature: 'Move.'. Three tribes answered their call: the Silver Tribe, the Bronze Tribe, and the Heroic Tribe. Soon after, the Golden Tribe encountered a crashed ship in which only a baby human known as Age survived; they named the child's race the Iron Tribe and assigned one of the few living members of the Heroic Tribe to protect him and his race. Now, in a distant part of the galaxy, humanity is threatened with extinction at the hands of the other tribes. With only a prophecy to go on, they set out to the deepest depths of space to find their savior named Age -- humanity's last hope.
Plot meyby is not similar, but both anime has climate of tactic combats includeing massive laser/beam guns.
Also small-talks between AI is like between Nodos. It's include themes loneliness or self-consciousness.
Heroic Age is more complex, if you watch it you can try Aoki Hagane, if you watch Aoki you definitely should watch Heroic Age
In a far and distant future, men and women have become mortal enemies. Each living on seperate planets, an interstellar war is being fought between the two very different peoples. Hibiki, a mere 3rd class worker, finds himself in the middle of a huge space battle, facing the nemesis of mankind: Womankind!
You cannot really compare the animation given the age difference (although Vandread comes out ahead on this one, bar the 3D sequences).
The story is similar - the protagonist ends up fighting alongside the "enemy", which in both cases seems to be comprised of females, and pretty ones at that. Women end up discovering themselves due to the main character as well as falling for him after they overcome the initial differences.