I said if someone has a hard exterior like the walls. Diamond jozu high level tekkai he has no piercing power. Noodle dude doesnt have a hard exteriorNot finished reading yet, but Sanji can in fact damage people internally. I think you ran wild with that wall thing.
He restructured the noodle guys face using his bones and junk. If that's not a prime example of internal damage I don't know what is.
He dies.What if the opponent is stronger than him at close range combat?