Horizon in the Middle of Nowhere Specials

Kyoukaisenjou no Horizon: Kyokutou Naruhodo Kouza · 境界線上のホライゾン極東なるほど講座

ONA 4 episodes Finished Summer 2011 ★ AniList 5.3 ★ MAL 6.09

Synopsis

Specials aired online, later released on BDs/DVDs

Source: ORIGINAL