Kyoukaisenjou no Horizon: Kyokutou Naruhodo Kouza
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Informace
Web (4 dílů)
Od 2011-08-07
do 2011-09-29
Alternativní názvy
ru:Горизонт среди пустоты: Спешлы
ja:境界線上のホライゾン 極東なるほど講座
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Synopse
Specials aired on Nico Nico Douga and YouTube, later released on BDs/DVDs.