Tensura Demon Lord's Vacation

Milim who was a big fan of One Piece, decided ask rimuru to create the One Piece world and decided to go there with her fellow demon lords! How would octagram fit in in this world that full of pirates and monsters?? [Notice] I am not the author of this fanfiction i just wanted to upload those novel or fanfiction that i couldn't find in webnovel app and wanted to share this with other people who are interested in this