Mihawk is the physical manifestation of his sword Yoru looking for someone who is worthy enough to wield him (theory) : r/OnePiece

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Roronoa Zoro/Abilities and Powers, One Piece Wiki

The 4 Possible Paths for Usopp's power development : r/OnePiece

Chapter 1010 Spoilers] Roronoa Zoro and Black Blades in One Piece

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Someone's Haki : r/OnePiece

One Piece: How strong is Mihawk? Explained in detail

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My reasoning as to why I believe Mihawk > Shanks : r/OnePiece

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How strong is Mihawk compared to other characters in One Piece

User blog:Rational Hyperboloid/Hyperboloid's Top 300 Most Wanted