As he squeezed into his car to head home, Raijin was feeling pretty good. The day had gone much better than yesterday. Mr. Yuan had scolded him less, and there were no accidental exposures to body-altering substances. For the end of a day full of manual labor, he was feeling rather energetic. As he thought about it, he gradually realized why. Lifting and moving countless boxes of inventory had given his new body a slight pump, and he wanted to see how it would feel to push himself all the way. He had yet to challenge his enhanced physique with a proper workout so he decided he would head to the gym after he got home.
As soon as he got to his apartment, he changed into his workout gear. He texted Valter to see if he wanted to join him, but he was so amped up that he didn't let more than five minutes go by before he headed out anyway. He decided to jog the few blocks down to the gym. He started to feel genuinely excited the closer he got. Along the way, he enjoyed the feeling of his legs pumping and heavy pecs bouncing with each stride. By the time he arrived, his heart was thumping from both the jog and sheer excitement.
Despite his extreme enthusiasm, Raijin decided he would just stick to a quick upper body workout. He figured by the time he got a good pump going, his appetite would catch up to him so he didn't want to delay his dinner too long. After some basic warmups, he began with some dumbbell exercises. He found himself working with significantly heavier weights than before. Next he moved on to bench presses. Again, it took him some time adding more plates to find his new repping weight. Then he moved to the pullup bar, then the squat rack, then leg presses. Raijin pushed himself with an unfamiliar intensity, pumping one muscle group after the next. He growled his way through rep after rep, savoring the rising tide of endorphins. He had gotten so caught up in the rush of his workout that well before he realized it, he had gone through an intense full body session over nearly an hour and a half.
As the young beast re-racked the weight from his final exercise, he came back to his senses. His reflection stood in front of him with an intense stare heaving its incredibly swollen body with each heavy breath. He was flushed and drenched with sweat. His enormous upper body was pumped to the point that the straps of his tank top were bridging a gap from his traps to the top of his bulging pecs which seemed as though they could push their way through the material at any moment. He gradually became aware that he wasn't the only one enjoying the view. As a matter of fact, many eyes had been on him since he arrived from the clerk at the front desk to various other gym goers who were now watching him bask in his glory. If anyone told them he was about to step onto the stage, there would have been very little doubt. His gaze lowered to his throbbing, vascular legs for a moment before he noticed that his compression shorts were on the verge of a difficult struggle to maintain his public decency. More than a few people had noticed this, too, by now. Bringing his attention to the matter suddenly shifted the tone of the moment. He felt the heat in his body begin to intensify and build in his loins. He didn't want to take his eyes off of himself and miss the splendor of his new physique, but doing so here would mean risking a certain wardrobe malfunction. After one last look, Raijin tore himself away from the mirror, grabbed his things, and dashed out of the gym and back to his apartment. The buzz refused to fade during the jog back. The feeling of his legs pushing beyond their maxed-out pump kept stoking the fire. He delighted in the feeling of his pecs now being too bloated to even bounce. One thing he knew for certain: he was racing his erection home, and he would have a LOT more people staring at him along the way if he didn't win.
Not unlike the day before, Raijin made it back to his door in the nick of time. As he burst into his apartment and turned to lock the door, his member had just begun to reach out above his waistband. Breathing hard, he quickly tossed his bag to the side and threw his clothes off on top of it. Slowly and deliberately, he turned to check himself out in the mirror by the door once again. He paused to admire the glistening heaps of muscle on his back and shoulders and well as his squat-shredded glutes. His shot himself an impish look and smacked his ass. It was like hitting part of an overlarge basketball. He looked down to the back of his calves. They were huge and stacked with layers of angular, veiny meat. He completed his turn, and the sight that awaited him caused his dick to surge to absolute full mast. Every muscle in his entire body was savagely pumped to near immobility. Every bulge and separation was highlighted by a sheen of sweat. Huge veins coursed up his arms, over the balled peaks of his biceps, and across the foothills of his shoulders before burying into the tops of his huge pectorals. He strained to raise his arms and flex his midsection. Eight flawless mounds bulged forward almost like a set of fists. They were framed by thick, ridged obliques and rounded, massive lats. Further below, a network of veins had branched out across his shredded waistline. At its center stood the hardest erection Raijin had ever experienced. The pump from his workout and his burning arousal had created a feedback loop resulting in eleven and a half inches of porcelain-hard dickmeat firmly throbbing from his groin with each beat of his heart. As if awaiting his acknowledgement, his balls tensed up and began pumping out precum. He lowered his arms and drew them back up into an amazing most muscular pose. The muscles of his upper body swelled as much as his skin allowed. The great spheres of his biceps, pecs, and deltoids crowded each other for space. Every curve and bulge had shifted from being smooth and supple to densely striated, vascular, and hard as stone. The beast in the mirror gazed back proudly with his fangs bared. As he took in his fill of this impressive sight, Raijin decided to give the poor mirror a break and strutted his way to the bathroom. He needed to shower anyway. His huge cock drooled all over his bloated quads as he went.
Raijin picked up where he left off once he found himself in front of the bathroom mirror. He lowered one hand to slowly glide up and down his prick and brought his other hand up to his hulking chest. He gently probed his swollen pecs with his fingertips. Their mass pulled the skin tightly across the surface. It felt like rubbing a hot water balloon. He stopped jacking for a moment to flex one arm. Held like this, his pec felt more like a chunk of concrete on a warm day. He moved his hand up to cap the great iron ball of his bicep marveling again at the contrast between its flexed and relaxed states.
He returned an arm to stroking his cock and continued posing in the mirror. As he slid deeper into arousal, it felt as though his whole body was being filled with molten gold. What Raijin hadn't realized is that he had gone nearly 24 hours without relieving his new beast-enhanced balls, and he had yet to experience what they were capable of over that period of time. Eventually, his other hand joined the first in working his fuckstick. He quickened his pace along with the fiery pressure welling up around his prostate. His strokes were building up tension deep inside his whole abdomen forcing him to groan and gasp with pleasure. A powerful twitch of his shaft told him the payoff was soon to come so he threw open the shower curtain and aimed for the shower wall. After a few more two-fisted strokes, a jolt fired up from his balls to his glans. He gritted his teeth as he felt his entire pelvic region flex hard from behind his sack to the lower half of his abs and join his dick in its absolute rigidity. Raijin could only groan through his teeth as the first bucketful of cum burst from his huge prick and splattered on the wall of the shower. There was a moment when he was able to quickly gather his senses before the next huge load joined the first. He moaned and shouted obscenities as pleasure flared up within him with each of his innumerable blasts. At last, he sighed as the heat began to subside while he emptied his final shots into the shower. The drain gave a couple of gurgles as it choked down the enormous mess.
Raijin felt blissfully sated as he stepped into the shower to wash himself and the tile. He couldn't help but notice, however, that he had once again gotten carried away with the primal superiority his transformed body possessed. Surely, he reasoned, such a dramatic change would just take time to adjust to. He decided he should do his best to get a handle on himself by the time Lily got home. Then there would be the matter of her adjusting to the new him. She would get back home Friday night, and Raijin had to get through three more days of helping Mr. Yuan before they could be reunited.