Gukuen Alice Spin-off called Kageki no Kuni no Alice (歌劇の国のアリス).
It takes place a few months from the end of Gakuen Alice, and features a new set of characters. The plot follows Andou Hikari, who is searching for her brother, who was taken away when she was a child due to his having an Alice. She eventually takes advantage of a one in a lifetime opportunity, for normal people to join a Alice music academy, hoping to find her brother.
The spin-off consists of six chapters and will be solely focused on Hikari and her friends, with the original characters of Gakuen Alice making occasional appearances. It was released in January 2017.