All members of the World Line Navy traveled together and found that they were fighting a war in another world.
Pirate fans beware, I don't want to kill the characters, but I am a navy fan so there will be less depictions of pirates, there will be villainous marines bullying pirates (I won't insult or vilify the pirate characters, but that's it, I really like navy orz)
There is Luffy who joins the navy, Ace is Whitebeard's adopted son, and all the members of the navy are evil (in short, I just feel that it is already very enjoyable and will it become even more enjoyable after being darkened. It is not a mirror world. Summer Nightmare was added to give the world line a clear reason to change).
In order to facilitate the distinction, the villain line uses [ ], and the ordinary line does not.
The author is supplementing the comics, and there may be more based on the timeline and settings of the comics.
There is a rather specific description of the [Navy] in the sea as "the poisonous snake hanging around the neck of the world", and Xia Yan is the brain of that poisonous snake.
"Ah la la la, so we are being teased by the world?"
Exhaling a breath of cold air, [Qing Pheasant] felt that something worse had happened than that he had just finished working overtime and hadn't applied for leave yet.
[Zefa] did not answer, but moved his new arms. It was obvious that he wanted to find someone to fight now. The few people around tacitly backed away. Working overtime as a social animal is already hard enough. Who wants to fight with you? Hey, this old man might as well replace his arm with a sea-floor stone. For a moment, he didn't know which one hurt more.
Mission: We have nothing but everything we need