Blood Blockade Battlefront

is a Japanese "shōnen" manga by Yasuhiro Nightow. The story takes place around a young photographer named Leonardo Watch. He gets 'the All Seeing Eyes of the Gods' at the cost of his sister's eyesight. Leonardo then moves to the city of Hellsalem's Lot. There he joins an organization known as Libra. The organization fights many monsters as well as terrorists. The manga has been published in the United States by Dark Horse Comics.
An anime based on this manga by Bones premiered in early 2015. Funimation licensed the series for streaming in North America. A second season aired from October to December 2017.
The series was sixth in the category "Sound" and fourth in the category "Theme Song" for "Sugar Song to Bitter Step" in the "Newtype" preliminary awards for 2015. Sonic, a monkey in the show, ranked first in the category "Best Mascot".