Luffy's next Haki power-up, called Observation Killing, will allow him to reach the level of the likes of Shanks.
The Straw Hat Pirates are led by Yonko Luffy, but two more members of the crew will soon become Yonko-level as well.
Game Rant on MSN
One Piece: Luffy’s Strongest Power Ups Ranked (Gear 5 Isn't #1)
Luffy has received many amazing power-ups in One Piece over the years, but Gear 5 isn't the strongest of them all.
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