Manga: Seraph of the End Vampire Reign Volume 32

Seraph of the End: Vampire Reign by Takaya Kagami (with art by Yamato Yamamoto) is a post-apocalyptic manga that combines vampire horror, dark fantasy, and dramatic combat. After a mysterious virus wipes out most of humanity, vampires emerge from the shadows and enslave the surviving children. Among them is Yuichiro Hyakuya, who loses everything... and vows revenge.