It's now winter in Kamakura. When Satsuki tells her friends that she'd seen Manatsu, Ichika at first doesn't believe it. But on the day before her 15th birthday, Manatsu's mirror fragment inside Ichika's desk drawer mysteriously disappears. That evening, a young girl calling herself Mafuyu, Manatsu's identical twin appears before Ichika with a mischievous smirk on her face. (Source: AniDB)

Maigahara Senior High School is a prestigious institution renowned for producing many talented musicians over the years. True to the school's reputation, an intriguing rumor is widespread among its students: whosoever provides a spectacular performance at the upcoming festival will receive extra credits. Serina Akesaka is an outgoing first-year student on the verge of failing her classes. After recalling the circulating rumor, Serina decides to recruit four students—Nazuna Tennouzu, Aliciana Ogata, Hakobe Naru, and Nagi Kobotoke—to form a band with her. As these five passionate girls start their journey together, the music they will soon produce is bound to touch everyone's hearts and leave an everlasting impact.

A patapi is a cute mechanical creature which is like a cyber pet. It can eat, sleep, play, and even help out its owners with some stuff. When Hibari Hanakoganei receives a patapi from a prince in her dreams, she is thrilled and names it Densuke. When mysterious forces try to steal Densuke, Hibari discovers that Densuke is not just an ordinary patapi. Densuke has magical powers that allows it to transform into a powerful cyber-fighter who looks like Hibari. Hibari's friends also receive similar patapis, and together they form the Cyber Team in Akihabara. (Source: AnimeNfo)

Unaired specials included in the Blu-ray and DVD release.