When a giant robot suddenly attacks the city, a high-school student named Aoba is saved by a classmate who's piloting her own mecha. After accepting an offer to join the alliance she's is a part of, Aoba is thrust into the middle of high-flying robot warfare.
First Air Date: 2013-12-29
Last Air Date: 2014-03-31
Status: Ended
Number of Seasons: 1
Number of Episodes: 13