Mahou Shoujo Oriko★Magica

Puella Magi Oriko★Magica

魔法少女おりこ★マギカ


Promotional material indicates the story will be set prior to the events of the anime, revolving around the initial interactions between Kyouko and Mami, along with a new Magical Girl named Oriko. Homura and Madoka will also be guest starring.

(Source: Puella Magi Wiki)