As Zoro's hand gently ran over his abs, he felt them tighten, before relaxing... And tightening again, only to relax once more. Finally, they tightened again, but this time he noticed that they didn't relax like before! In fact... They felt like they were expanding now!
Sure enough, just under Zoro's hand, his abs were growing stronger, larger, and more defined. His biceps began to swell with strength, growing from their usual baseball size, up to softball size! And they were only growing larger as he time went on! His already hard pecs were swelling up with stregth, filling out his shirt and pressing against it. Every contour of his massive chest was outlined. You could even see his nipples, slightly erect, poking at the shirt as his chest continued to fill out. His sleeves were growing tighter around his arms, and would soon tear at the slightest flex.
Zoro's lower body wasn't left out of this amazing opportunity! His thighs started to grow, feeling tight against the material of his pants, as his calves started to ball up as well, reaching a plump, round size. His pants started to ride up, as even his ass was growing firm and tight, bulging up and out until it was nice and bubbly, until it was flexed, where it then became two iron cheeks. To top off his massive growth, Zoro's already significant manhood as grown out as well, sliding from his crotch down his thigh, pinning under the material of his pants. The massive swordsman must have been packing at LEAST ten inches!!!
Surprisingly enough, Zoro's clothes had not yet torn! The large man now looked down and over his body. "Wh-Whoa..." was all he could muster as he looked over his new physique.
"Wooooooow!" Chopper said in admiration. "That turned out even better than I expected!"
"Wow..." Zoro repeated, "... I'm huge!" Grinning, the beast of a man then gave a massive FLEX, much of his clothes now falling to pieces as his new muscles bulged and grew. A few veins popped up here and there, adding to just how intimidating Zoro looked!
It was then Zoro decided...