Mahou Shoujo Madoka★Magica: The Different Story
魔法少女まどか☆マギカ ~The different story~
Puella Magi Madoka Magica: The Different Story by series creator Magica Quartet and artist Hanokage is a spin-off series from the original world of the hit anime and manga Puella Magi Madoka Magica. In The Different Story, Kyouko and Mami take center stage, and the story follows an alternate chain of events.
(Source: Official Yen Press synopsis)