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Leng Sha doesn't like humans, and even thinks aliens are much cuter, so he becomes a blood hunter in order to protect the people who saved him. When she met Roland, the peerless and splendid vampire prince, she was forced to wake the vampire king from his slumber, but was treated as a traitor to a hunter and fled all the way. A story that had been buried for hundreds of years was revealed. The Seven Deadly Sins, a mysterious organization that existed between heaven and earth, finally appeared, and then one incident after another happened...