this so he's biting his forearm, is he gonna blow into he's whole body and become a giant ? kinda like this –-> http://www.volonte-d.com/perso/images/sengoku2.jpg
in my opinion i would prefer something more about speed, something more like an upgraded gear 2nd …. (and i agree that gear 4th must have something to do with his gomu body more than haki stuff..)
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and do you know how do i take this little fox/queer/sanji off my profil ?