Nurse Yuki Akabane is a descendant of a line of vampires. He's often visited at the hospital he works at by a donor nut named Osamu Mayuzumi, the insatiable cram school teacher. Yuki never really thought twice about Mayuzumi, but when he drinks some of his blood on a whim, it tastes so good to him that he tries to get closer to him to savor more… Will he ever be able to drink another's blood again?