The Challengers
Nanachi and Mitty's past is revealed. How did they become what they are and who is responsible for it? Meanwhile, Riko is on the mend after her injuries.
Release : September 29, 2017
Runtime Epiosde : 47 minutes
Rating : 7.40
Credits
Miyu Tomita ( 富田美憂 )
Riko (voice)
Mariya Ise ( 伊瀬茉莉也 )
Reg (voice)