One Piece : The Strongest Vice Admiral

Adams Dylan is a peaceful person who has a sense of justice inside his heart. So, when he found out he was transported into the world of One Piece, he didn't find the appeal of the so-called adventure and freedom just like any normal transmigrator. Instead, he found out how disgusting this world is, and how could he live in the middle of it. That's why he decided to join the Marines. Not only it allowed him to fulfill his sense of justice, but it also led him to reveal the deepest secret in this world. What is that? WARNING! A lot of characters death here! If you are a fanatic of the original story and didn't want to see a lot of the main character's death here, especially the straw hat, please, leave peacefully. Thank you! :)