G - Normal Adult
F - marine soldier(private)
E – marine Lieutenant
D – marine vice captain
C – marine captain
B – rear admiral
A – vice admiral
AA – admiral
AAA – fleet admiral/ Yonko executive
S – Yonko
SS – Pirate King
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One Piece: War Of The Kings
FanfictionThis is a novel will be based One Piece. Our MC will be in the world of One Piece as Luffy's big brother. To help him with his quest to conquer and become the strongest he possesses the Fantasy System.