Cure Blood summary:

Fuhoe Scans: [Ebook Exclusive! Includes Bonus Extras]You’re the only one in this life where I can’t die.A storyteller that will touch your soul is born.A sci-fi about the lives of a doctor who gives blood and a vampire who doesn’t age.The new doctor, Tadayuki, suddenly underwent a transformation.He desperately wanted blood like a vampire, and his aging process had slowed dramatically.Tadayuki attacked his senpai Juji, and disappeared after telling Juji that he had died.But Juji sought out Tadayuki and offered him a helping hand, telling him, “I’ll examine you and give you blood, too.”They never could have imagined that it was the beginning of a secret they would keep for decades