 A live @-@ action miniseries , titled Shingeki no Kyojin : Hangeki no <unk> ( 進撃の巨人 <unk> , " Attack on Titan : Beacon for Counterattack " ) and utilizing the same actors as the films , started streaming on NTT DoCoMo 's online @-@ video service <unk> on August 15 , 2015 . The three episode series focuses on Zoë <unk> and her research of the Titans , as well as how the Vertical Maneuvering Equipment was created . 
