The original Blood Blockade Battlefront manga (known as Kekkai Sensen in Japan) by Yasuhiro Nightow is currently serialized in Shueisha’s Jump SQ.
Gilbert F. Altstein, K.K., Steven A. Starphase, Leonardo Watch.
Supernatural action TV anime Blood Blockade Battlefront is returning to Japanese airwaves in October of 2017 with a new season entitled Blood Blockade Battlefront & BEYOND, and the Libra crew are getting ready for action in a new key visual released to promote the series.