The only thing they know is that Zoro came face to face with Mr. 6 at one point and he ended up fighting and defeating him, rejecting the offer to join the Baroque Works in the process.

The move was first used in the Little Garden Arc when Zoro intervened in Mr.5’s attack on Usopp, cutting him down before he had the chance to explode. As strong as it is, it does come with the ...