Owari no Seraph

Owari no Seraph 「終わりのセラフ, Seraph of the End」 is a Japanese dark fantasy manga series written by Takaya Kagami and illustrated by Yamato Yamamoto with storyboards by Daisuke Furuya.

First published in September 2012, Owari no Seraph tells the story of an orphaned boy named Yūichirō Hyakuya trying to rid the world of vampires by joining the Japanese Imperial Demon Army.

It is published by Shueisha on Jump Square and in English by Viz Media on Weekly Shonen Jump.

An anime adaptation by WIT STUDIO was announced on August 28, 2014. FUNimation then licensed it in English and began playing the subtitled episodes the same day they were released in Japan. A few weeks after the episodes began airing, episodes dubbed in English were released as well. The first cour of the anime aired in Japan from April 4, 2015 to June 20, 2015. The second cour of the anime began airing on October 10, 2015.

Plot
Years ago, a lethal virus spreads across the world, wiping out most of humanity and allowing vampires to enslave the human race. From there, Yūichirō Hyakuya and his fellow orphans at the Hyakuya orphanage are treated as livestock, only being allowed to live for their blood. Desperate for freedom, Yūichirō and his best friend Mikaela hatch a plan to escape with their family to the outside world, hopefully free from vampires—only for their attempts to end in tragedy. As the only one to make it out alive, Yūichirō allies himself with the Japanese Imperial Demon Army — Japan's only hope against the vampires — in order to avenge his fallen friends.