Isekai de Ikinuku Tame no Blood Skill

Because he didn't want to die, he quit humanity...

After his plane crashes, Akira Tomose, a high school student, wakes up in a strange world. In the world to which he's been transmigrated, those with a vampire pedigree use their special powers to protect humans, while humans survive by offering them food: their blood. So Akira decides to live an unpleasant and unseemly life by becoming a vampire. A survival fantasy about struggling against pitch-black despair!!

(Source: Kodansha, translated)