The student looked upon the master and asked: "Shishou why do we call Zoro the Grandmaster?" The master turned around to face the student leveling a solemn stare and speaking with the gravitas befitting his position as the 4th master of the Holy Temple: "He just is. Such is the way of the world, a mystery beyond the likes of us mere mortals to comprehend".
"Who can compare to Zoro? Who can withstand his terrible might? The Grandmaster is a fearless and impeccable warrior, a mighty man of valour. The Grandmaster's wrath is a terrible thing. For it is written no matter the opponent, regardless of their haki, devil fruit or other abilities, the Grandmaster always oneshots!"
"He oneshots his opponents without even cutting them. He oneshots his opponents with a seppuku knife. As surely as what goes up must come down, so also is Zoro's oneshot certain! Sing praises to his name for his prowess his unmatched, his skills are unparalleled, his oneshots unrelenting. No matter the opponent or situation, Lord Zoro shall prevail. Praise be his name!"
FIlled with awe at the enlightenment the venerated master had provided him, the student too shouted: "Praise be his name!"