[Fanfic] Kamen Rider Ex-aid x Symphogear: Game of Destiny!

Three years ago, in another parallel world, humanity was infected with a new virus, the Bugster Virus, and turned them into creatures known as Bugsters. In the present time, Tsubasa Kazanari and Kanade Amou, the idol duo known as Zwei Wing, use their songs to power an ancient weapon known as "Symphogear" against a race deadly alien, called "Noise". While the public knew of Noise's existence, knowledge of the Symphogears remained secret.

One day, Hojo Mirai, the son of Hojo Emu, attended a concert with his best friend, Tachibana Hibiki. The concert was attacked by Noise causing many people to die. In that situation, Mirai transformed into Kamen Rider Ex-aid to join Kanade and Tsubasa to fight Noise. While they were fighting Noise, Kanade was about to sacrifice herself to protect Hibiki, who was accidentally dragged into their fight. However, the Ex-aid stopped her in time, but that also left Tsubasa devastated and a fragment of Kanade embedded in Hibiki.

And from there, all a game that decided the fate of humanity was started.