Magia Record: Puella Magi Madoka Magica Side Story, Vol. 4 by Magica Quartet
Iroha, still searching for her little sister, gets caught up in the fight against the Rumor of Mizuna District. The ones who guard against this Rumor and the misfortune it calls forth are the Wings of Magius, sisters who call the Doppel effect proof that they can release magical girls from their fate!