Well there is only on arc left for the story so it's safe to assume he will get his fifth gear this arc and he will get his last one ( Gear Reverse ) in the next one ( the final arc ).
1- As for perfecting Gear 4th i don't see any problem with it except the time limit and that's because he uses...
So i was wondering what you guys think about what Luffy's Gear 5th will be.
Gear 2nd : Blood vessels.
Gear 3rd : Bones.
Gear 4th : Muscles.
So the next and only logical step will be nerves right ? ( I mean what else can give luffy such a power up except nerves ? )
Does this mean he will...