One day, a teal haired boy, Kuroko Tetsuya (age 16) was hanging with his friend, and light of Seirin High, Kagami Taiga, in Tokyo. They then stumble upon a small child in a dank and dirty cardboard box in a ally. He had red hair and two different colored eyes.
He was skinny, bruised and in pain from burns. Kuroko felt pity for the child and takes him in. But soon he finds something about the child...he's a vampire.
But he couldn't let him go and hurt other people when he needs blood, so he takes care of him as his own and he even donates his own blood for the vampire boy. From the blood he donated, the vampire boy warms up to him and they be come best friends.
But one day, the teal head, gets severely injured. Will his new friend help him? Or leave him?