Seraph of the End: Vampire Reign

Seraph of the End: Vampire Reign

Available on Funimation
Children live as slaves of emergent vampires after a virus kills everyone above the age of thirteen. Yuichiro Hyakuya was able to escape this misery and has vowed to take revenge for the misery suffered by the vampires.
Starring Yuka Iguchi, Kaito Ishikawa, Miyu Irino