@Alfiere:
Every Marine base i remember seeing was a japanese castle.
Marineford was a Japanese castle. You're remembering seeing Marine HQ every time Oda cut to there since Vol. 11. That was all Marineford
The vast majority looked like a bunch of white cylinders with Marine stripes on them. Not remotely Japanese.
Everybody everyehere eats bentos and rice balls. Everybody everywhere expresses regret and asks forum forgiveness kneeling till his forehead touches the ground.
Japanese readers aren't even going to process stuff like that as Japanese, they're just going to process that as normal.
It would be like a Western One Piece where most of the world shakes hands and eats hamburgers. Americans wouldn't even think to think of those as culturally specific.
One Piece will forever be made with the Japanese audience front and center in mind.
Basically i meant that as in 99,9% of mangas the generic aspects of the world are very "japanese-y", and it's funny seeing characters react to the culture of wano like it's something completely alien to them.
Probably because Edo period Japan is still alien and strange to a modern Japanese audience. While also kinda familiar, thus why it's fun for them.
Like if One Piece was French, and they arrived at Ancien Regime island.