Six months ago, Sakuta Azusagawa had a chance encounter with a bunny girl in a library. Ever since then, he's been blissfully happy with his girlfriend: Mai Sakurajima, that same bunny girl. However, the reappearance of his mysterious first crush, the now-adult Shouko Makinohara, adds a new complication to his relationship with Mai. To make matters worse, he then encounters a middle school Shouko in the hospital, suffering from a grave illness. Mysteriously, his old scars begin throbbing whenever he's near her. With Shouko's bizarre situation somehow revolving around him, Sakuta will need to come to terms with his own conflicting feelings, for better or worse. With a girl's life in his hands, just what can he do?

Humanity is finally confronted with the threat of the Custodians—the ancient, sentient species held responsible for cursing humanity to speak different languages thousands of years ago. The Symphogear wielders—Hibiki Tachibana, Tsubasa Kazanari, Chris Yukine, Maria Cadenzavna Eve, Kirika Akatsuki, and Shirabe Tsukuyomi—are sent to the Antarctic in order to retrieve an ancient relic. After securing it and rescuing the scientific staff present there from a Coffin, the automated defense mechanism protecting it, the relic is given to American researchers due to international agreements. The criminal organization Noble Red, a remnant of the previously fought Bavarian Illuminati, starts targeting the relic. Will the Symphogear wielders and their supporting organization S.O.N.G. be able to foil the plans of the organizations conspiring against them?

Original short episodes featuring characters in super-deformed style. Bundled with Blu-ray/DVD volumes 3 to 6 of the anime.

To the students of Karai High School, Nanako Yukishiro is a pretty, calm, and cute 16-year-old. However, Nanako is no ordinary girl, as she cannot speak! Instead, Nanako communicates through senryuu—17-syllable-long poems. Sixteen-year-old Eiji Busujima used to be delinquent in his middle school years. However, he has since turned over a new leaf due to his newfound love of senryuu. Despite his menacing looks, Eiji gets along well with Nanako as a fellow member of the Literature Club. Even though Nanako is mute, the adorable pair have no problem communicating with each other. Senryuu Shoujo is a light and relaxing story of two teenagers' daily lives.