Can anyone achieve gears in One Piece? Like how Luffy can achieve

People really need to remember that Luffy's power is 100% earned through pure hard work and determination : r/OnePiece

Will Luffy still use 'too much Haki' on Gear 5? What do you think? - Quora

Buy Pop! Luffy Gear Two at Funko.

Can anyone achieve gears in One Piece? Like how Luffy can achieve second gear and third and whatnot, can anyone with devil fruit powers achieve this? - Quora

Gear up for Gear 5! One Piece director teases mind-blowing voice acting by Luffy - Hindustan Times

Luffy's Gear Five Transformation Will Join One Piece Pirate Warriors 4

let's talk about Luffy's gear 5 , simply i don't like it.

One Piece: How close is Luffy to Gear 6?

Can anyone achieve gears in One Piece? Like how Luffy can achieve second gear and third and whatnot, can anyone with devil fruit powers achieve this? - Quora

Shanks' Reaction to Seeing Luffy's Gear 5 Sun God Transformation - One Piece