In the future, mankind is divided between two powers: Union, and Deague. For the young Sarah Werec, watching her dearest brother Ralph depart for the front lines of the war was a fate worse than death; for even if he were to survive, the 130 light year distance between them dictates that even if he were to return, she would be long since deceased. Thus, in an effort to see her brother again, Sarah sets out to become a pilot of the Strain – Union’s mecha force; but on the eve of reaching the first step to her goal, her only chance to succeed is stripped from her. Haunted by the many ghosts of her memories, Sarah must now endure an endless series of sacrifices as she struggles to discover the truth about her brother...
It is the year 2356 AD, 189 years after a shockwave from a distant supernova decimated the Earth. Since that fateful day, humanity has begun training for a final mission to protect the planet from the inevitable oncoming 2nd shockwave - a mission whose failure means the annihilation of mankind. For Katase and her friends, their training at the foundation Stellvia is just the beginning of an adventure that could lead to saving the world, or seeing its end...
Both Stellvia and Strain are flight / space anime and feature chick pilots, space training schools and giggling teenagers. Although, Strain has a more adult-oriented storyline.
Both shows are hard science fiction exploring the future expansion of mankind into space. Both are aimed at seinen audiences and although Strain may appear more mature than Stellvia, with blood and deaths in every episode, both series have equally deep insight into human psychology when confronted with the unknown. Both shows also feature a headstrong, messianic main heroine and subtle yuri undertones.
In the distant future, aliens called Victim destroyed all the worlds of humanity except for Zion. In this desperate time, young boys of the space colonies are sent to GOA to learn how to, and compete for the right to, pilot the fighting machines designated as Ingrids. These child pilots are assisted by EX -- a special power, and by female partners who repair the Ingrids. However, to save humanity, exceptional candidates are needed, and two new students, Zero and Hiead, motivated by their desire to succeed and burning rivalry, may be the human race's last hope...
Flying mechs, stubborn heroes with their own reasons for winning, battles in space, aliens, loss, overcoming the odds... What's not to like? Both series have the same inner struggle that must be overcome, both deal with young characters taking charge of their lives in the heat of battle. If you like one, you owe it to yourself to check out the other.
In 2010, the Britannian Empire enslaved Japan using powerful mecha known as Knightmares; in the aftermath Japan was renamed Area 11, and its people began a hard and terrible existence. Lelouch, a Britannian student living in Area 11, has grown up hating the Empire and everything it stands for. One day, in the middle of a terrorist attack, Lelouch meets a mysterious girl who grants him the ability to control minds. Can he use his new power to fight for freedom, or will his hatred twist his good intentions into mindless acts of vengeance?
Both Soukou no Strain and Code Geass have the same basic components:
First, great characters with tragic pasts. Both anime feature two dimensional characters who are actually affected by their past. Both Lelouch (Our manipulative and tragic hero of CG) and Sarah (Our somber, haunted heroine of SnS) have had everything they thought they though they knew flipped upside-down.
Second, trilling, fast paced plots with lots of action. Let's see here... Mechas? Check. Check. Guns? Check, and Check. Blood and Character Death? Check and... Check!
And last, The Romance Factor. Both anime have no real set pairings, and let the fangirl imaginations take over in the matter. But they both include kisses and interesting situations~