Superb Song of the Valkyries: Symphogear (2012)
During a concert by idol group Zwei Wing, an alien force known as the Noise attack the stage. Group members Tsubasa Kazanari and Kanade Amou suppress the attack using their Symphogear armor, but despite their best efforts, innocent bystander Hibiki Tachibana is fatally injured. Distraught and much to Tsubasa's dismay, Kanade sacrifices herself in the process to save Hibiki. Two years later, Hibiki lives on. Tsubasa now fights alone. With the threat of the Noise increasing, Hibiki finds herself encountering the Noise once again but this time she is granted a chance to become attuned with the same Symphogear that Kanade wielded.
Seasons & Episode
Going off of data retrieved from Tiki's remains, the Symphogear users head to Antarctica, where they are confronted by a powerful automated "coffin" that Adam was investigating. Despite the overwhelming odds, Hibiki and the others manage to destroy the coffin, inside of which they find the corpse of a Custodian.
As Shem-Ha brings out her final form to fight the wielders, Carol burns up her memories to protect them from Shem-Ha's attack. Shem-Ha then begins using her bio-terminal network to take control of all of humanity, but Hibiki, fueled by determination to save Miku, manages to disrupt Shem-Ha's power and finally drive her out of Miku's body. With Yggdrasil still active, Miku dons the Shenshōjing Faust Robe and joins the others in a united Superb Song, allowing them to simultaneously destroy all the Yggdrasil cores around the world. With the world restored to normal, Hibiki and Miku tell each other their true feelings.