Completed Special PG-13 - Teens 13 or older
Humanity Has Declined Specials
人類は衰退しました
7.18
Score
#3729
Ranked
#5401
Popularity
20.7K
Members
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Episodes: 6
Duration: 2 min per ep
Aired: Sep 19, 2012 to Feb 20, 2013
Source: Light novel
Synopsis
DVD/BD Extras.