Shigahime

Shigahime manga summary: From the author of Suzuki-san wa Tada Shizuka ni Kurashitai comes a story about a boy named Osamu Hirota who unwillingly loses his ability to live a normal life thanks to an immortal vampire woman and her former lackey Souichi. Cursed with the form of a monster and the need to hunt for blood to sustain a human form, how will Osamu cope with his new life?