 On January 7 , 2011 , Puella Magi Madoka Magica debuted on Mainichi Broadcasting System ( MBS ) , Tokyo Broadcasting System ( TBS ) , and Chubu @-@ Nippon Broadcasting ( CBC ) in Japan . The first ten episodes aired weekly without interruption , and were also available for streaming on Nico Nico Douga and <unk> 's Anime One service . However , due to the 2011 Tōhoku earthquake and tsunami in March , the planned broadcasts for the last two episodes were halted . Additionally , TBS elected to cancel its scheduled airing of the 10th episode in order to provide more news coverage of the natural disaster . 
