A Vampire in the East Blue

"When a catastrophic spell goes wrong in Mystic Falls, the immortal, cynical, and highly dangerous vampire Damon Salvatore is ripped from his world and dropped into the East Blue. Finding himself on a small ship with a rubber boy who wants to be Pirate King, Damon decides to tag along. But the Grand Line has never seen an apex predator quite like this. Armed with immortality, mind-compulsion, and a newly awakened terrifying power known as Haki, Damon becomes the dark shield of the Straw Hat Pirates. Meanwhile, in the Afterlife, the Mikaelsons and the Mystic Falls gang watch in sheer awe as their resident bad boy declares war on the World Government."