After the time skip, we saw Zoro coming back with a scar on his left eye. At the beginning everyone thought he had lost his eye during his training alongside Mihawk, but, as the time passed, we came to the conclusion that, probably, he’s keeping it close for his own will, so that the scar isn’t a sign of a possible blindness.
But if he’s really keeping it close for his own will, maybe it means that Zoro’s left eye has some new special power that needs to be used only in particular situations, so, what is this power?
Before answering this question, we’re going to make some preliminary considerations. Let’s go!
In the world of One Piece, the famous swordsmen usually wield swords called “Meitou”, which are some incredibly powerful swords; they’re divided into 3 groups: 12 supreme, 21 great and 50 skillful. Following the events of the story, I came to think that some of these swords are cursed and, in particular, they follow a logic like: “the higher a sword is ranked, the stronger its curse is”.