Seraph of the End Manga Volume 1

Seraph of the End volume 1 features story by Takaya Kagami and art by Yamato Yamamoto.

After a catastrophic epidemic kills every adult on earth, vampires arise from the shadows to enslave the remaining human population. Yuichiro and his friends are kept as vampire fodder in a creepy institution masquerading as an orphanage. One day, Yuichiro's dreams of fighting back are realized when the orphans stage a daring escape. But things go horribly wrong, and his dream is kept alive at a cruel price.