Seraph of the End

Owari no Seraph (終わりのセラフ, Seraph of the end) is a Japanese manga written by Takaya Kagami, illustrated by Yamato Yamamoto and storyboard by Daisuke Furuya. The manga has been serialized in Jump Square magazine by Shueisha since September 2012, with individual chapters collected into two tankōbon volumes as of May 2, 2013. On October 7, 2013, Weekly Shonen Jump added the series to its digital magazine lineup.

Plot
Set in the near future, in a world where humans have to fend against vampires. Having lost everything during one such attack, Yūichirō Hyakuya aims to join a specialized military squad for the sake of revenge, even as more unnatural things begin to occur.

Other Sources

 * MyAnimeList