Announced at the Soushi Minashiro Birthday Fes 2021. Initially promised to fans during the 2017 birthday event, this self-contained entry to the Fafner series will be a "peaceful spinoff".
Fafner of the Blue Sky: Behind the Line has finished airing and it has 1 Episodes. It is also Known as: 蒼穹のファフナー BEHIND THE LINE, Soukyuu no Fafner: Behind the Line
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