Mine Mine No Mi immersion

it's an immersion Modpack with Mine Mine no mi, cart's addon mmnm, Eureka ships and a new type of world generating (islands only, must be change when creating the world).

You'll have a bunch of One Piece Things such as devil fruits, fighting style, race, mob, factions, quest, bounty, weapons and haki. (you can also drop random devil fruits in leaves (1 chance over 5000)
This also add a new way to generate worlds, if you go to world creating settings you can set on islands. This would make your world only made of islands, big or small. But no continents, this is the optimal way of playings since the spawn of structures have been change to match the ratio sea/land.

To go with there is the mod Eureka ships that make you able to build ships made of full blocks.

Also to go with there is waystone, to travel from island to islands you've already been. Nature compass, to locate biome. And Xaero world map and mini map to have a map of your world. And backpacks.