The universe of the future is divided between the Earth Alliance and ZAFT. After a year of war, ZAFT attacks the neutral colony Heliopolis to steal five prototype mobile suits. The mission is a success, but a young man named Kira stumbles upon the fifth Gundam, and he may be the Alliance's only hope...
When a group of children discover a strange cave at the beach, their lives are forever changed. Inside they find a hide out filled with computers and a man named Kokopelli who gives them a curious offer: to participate in a special game in which they save Earth from fifteen giant monsters. To defeat the invaders, he will give them a powerful mecha of black armor. The children eagerly sign the contract, name their new weapon Zearth, and must now take turns to pilot it; but the 'game' is in fact all too real and the consequences of battle become the stuff of nightmares. With no option to cancel the contract, is there any way to stop the game before it is too late for all of them?
Both animes have teens having to use mechs/giant robots to save their planet. Both are deeply dramatic dealing with things like the loss of life on a catastrophic level. Both animes also let the water connect with the main characters to understand why they do what they do but I think this is more true for Bokurano on a larger scale because there are alot of "main" characters even if their role is small.
Kazuki Yotsuga is able to see things that others can't; in his visions, giant robots battle it out in the streets, causing massive damage in their wake. Though his visions have made him an outcast from the rest of his peers, they have attracted the attention of Ken Sanada – a physicist who believes Kazuki’s visions are a gateway into a parallel world! He places Kazuki into one of his inventions and accidentally sends him to the parallel world in his visions, where he finds himself in the middle of a war for control of the world! Kazuki must now become a pilot of one of the robots in order to join the fight for peace, all the while trying to find his way back to his own world…
In a time of great heroes, the evil Sephiroth and the power of Meteor were vanquished by a warrior named Cloud Strife and his companions. Now, though the life stream of the world has been restored, certain people have become sick with Geo Stigma -- an illness which is as mysterious as it is incurable. Meanwhile, in the shadows, a new enemy has appeared: Kadaj, who holds the key to the destruction of all life. Against insurmountable odds, Cloud, Tifa, Barrett, Cid and the rest of the gang must band together one last time to defeat Kadaj and save the world from annihilation.
Gundam Seed is rarely one of the Gundam shows that have the closest feeling to that of Final Fantasy. Cool Character Designs Bishonen and Bishoujo alike, drama, dark tone, fictional setting, sci fi, weaponry, and destroy the world theme. Kira's involvement with Rau Le Creuset is similar to Cloud and Sephiroth later on. Plus a lot of FF reference are being made: Anti Ship Sword-Cloud's buster sword, Providence Gundam's beam saber-Sephiroth Masamune, ZAFT salute-Seed soldiers salute, and ZAFT mobile Suits-SOLDIER.
Half a year has passed since Sousuke Sagara took up the job of protecting Kaname Chidori and has started living like a normal teenager for the first time. A former child soldier, his view on the perils of everyday life is highly unconventional and in frequent need of violent adjustment; Kaname can only hope her endless assault will eventually get him used to normal life. But a shadow looms over their happy days as Sousuke's employer, the private army called Mithril, is attacked by a new unknown enemy. Suddenly outgunned, can Mithril afford to keep one of their best playing around?
In the future, babies are no longer born - they're grown. The crew of the newly developed spaceship Bilkis has been sent to investigate a mysterious "ring" that has shown up in Earth's orbit. Hand-picked through careful gene selection, the crew covers the area of skills needed to complete the mission. Except for ensign Mika Seido, whose gene-type is "white" - undefined.