Pirate's Bad Doctor

Waking up one night, Ron came to the world of One Piece and became an ordinary jailer in Impel Down City. Fortunately, Ron carries a sin value system. As long as he kills sinful people, he can obtain sin points and improve his skill level. From then on, there was an evil nemesis on the sea, and countless pirates were frightened by it. Ron has become the savior of the people of the world. but...