A strange feeling in her chest (P)

Something strange was happening to her chest and although it felt good, it was different. Momo was currently too busy paying attention to her arm to notice though, watching each of the muscle fibres multiply, pushing her soft skin forwards in all directions. Watching her veins becoming more prominent on her growing mass of an arm. Watching her power increases. But her attention was ripped away from her now 37-inch bicep towards her pecs when they started to grow at a rapid rate. Her mind was overfilled with pleasure as she fell to her knees, eyes fixated on her chest. Every inch they pushed forward caused to unleash moan that would be able to shatter glass, but it wasn't only the growth of her muscles causing this pleasure, no something more unexpected was happening, her tits started to sink into her pecs, decreasing in size. Momo realised this fairly quickly and was surprised by how good it felt to feel them slowly sink into her chest. Her mind felt with ideas of lust, though a small amount of fear existed as well. Despite feeling nice, she wanted to feel even better so she quickly placed both her hands on her still massive breast and began to caress them. Quite aggressively, she jiggled them up and down while rubbing her erect nipples. She felt as they were both pushed forward by her budding, mighty pecs and as they slowly shrunk in size. It felt good. "Quicker! Faster! More!" Momo shouted. She didn't put a lot of thought it to what she was saying but she surprisingly loved the feeling of pecs slowly taking the place of massive tits. This was despite always being secretly quite proud of her massive tits, always being willing to show them off (there was a reason her hero custom had no zip). She even liked having larger tits, but something about the way this felt just made her accept it quickly, a deeply prevented part of her mind was already thinking about what she could do with massive pecs. The rest of her body agreed and loved it just as much she did. Her pussy was as wet as a waterfall, and in an attempt to pleasure it she resulted to rubbing her developing thighs together to take her mind off it. At least she managed to keep herself off the floor this time, but the pleasure was still much greater.

Since Momo was so focused on her chest she didn't have much time to focus on the rest of her burgeoning body. Even her arms had a hard time pulling her attention away from her chest, and they grow a lot. Her bicep's veins grew even larger and thicker and more blood went through to return to her heart, all of which was needed for the amount of muscle mass added to her. Trying to regain Momo's attention, it constantly pushed forward and forward, trying to reach the greatest heights possible, being big enough to even rub against her tits and pecs while pleasuring them. Her tricep did the same in the opposite direction, creating a small sound with each muscle fibre gained due to the speed.

But not even this was enough for Momo to break her attention away. No not her, 63-inch thighs wet with sweat, nor her 33-inch calves, or her wide hips and large ass beautiful ass, or her even thicker 6 pack, or her 40-inch shoulders, or her back slowly closing the distance between itself and the neck, or even her previously mentioned 45-inch bicep and 60-inch tricep stood a chance at breaking her attention away from her chest. Her pussy became even more demanding, with Momo needing to up the amount of power used to keep it satisfied. This was perfectly timed by a complete coincident, as a massive period of expansion was about to take place.

At this point, her breast was still large enough to be called an E cup meaning her hand could easily be placed around it in some extra room. But with only a vague feeling to prelude it, it shrank a whole cup size and her chest grew 3 inches in a blink of an eye. Of course a loud moan, in fact, the loudest so far, was realised from Momo. It felt amazing. Though it was only her chest that grew (well apart from her breast) all over her muscles grew by a couple of inches. Hell, her width and height also increase by a lot as well. Jumping up a whole extra foot in height and gaining 1/4 of a foot in width. Momo didn't really have any time to think about well anything since it only took a couple of seconds for it to happen again. The moan was louder this time, pushing her feminine voice to its limits. Once again her tits sunk into her pecs as they jolted forward, taking up the space her breast used to occupy and then some. Momo now understood that this was the last phase of growth, not just due to the speed but also how good it felt. Wanting to enjoy the last moments with her breast she quickly took to giving them one last massage with her large powerful arms, trying to tease out the milk inside of them. Though as soon as she started to do this her tits once again shrank now becoming B cups, meaning her hand could just about feel her pec as well now. This time it felt good enough that her whole body had to stop moving, though the amount of muscle she put in such a short time also played a role. She tried to prepare herself for the two jolts of growth, trying to prepare herself for how good it would feel and how good she would look. The next phase felt better than the last, with her body growing even more than before. Her once large breasts were now reduced to two small mounds of fat sitting on her superior pecs. In her mind, she thought how good it would feel when her breast finally disappeared though she would miss them. 8 seconds later her breast would finally be consumed, which she celebrated with an animalistic moan that sounded like it could never come from a human. She also managed to tease out a stream of milk which definitely brought her some joy.

She collapsed on her knees for a moment and took a deep breath. Her mind was still in a state of arousal, though she was enjoying it she tried to bring it in order so she "enjoy" the rest of her body more. Once she did she took stock of the new body. The first thing she looked at was her absolutely breathtaking pecs, they were large enough that she could no longer see below. Although she didn't have the ability to measure them she could they could win records, luckily I can. Her chest was 185 inches, although a bra would be useless for her if she wanted one she would be out of luck as nothing would be big enough to fit around her. Momo was already licking her lips at just the sight of them. Although she knew they might make her look a bit manly that didn't really matter to her at this point in time, it simply felt good, both how it felt and the power that came with it. She couldn't wait to see how her friends react, as mentioned before she is a slight bit of an exhibitionist. Plus in her mind, she was really hot so it wouldn't be surprising if some of her classmates couldn't resist but fawn over her. "I should just stop thinking and just feel them!" Momo thought, wanting to explore her new body. Aggressively, she placed both of her hands on her pecs charting the areas where her breast once laid. It was obviously hard and she expected that, but her soft skin and the sweat coating it gave it a silky feeling. This alongside the warmth generated from her colossal chest start to turn her on. She loved easy it was to turn herself on and of course, she couldn't say no to herself and began to crease her nipples. She instantly let out a moan of pleasure with her eyes rolling back for a bit but she quickly brought them back down. While doing this, she couldn't resist but gave her chest a quick flex. "UNG!" she couldn't help but moan again at how good it felt to make her chest larger with it even having the strength to move her heavy arms out of the way. But now she was looking for a way to climax quicker, bringing her left hand down to her pussy which had already started to drip. As she brought her hand down though she started to realise how big she really was. Even on her knees, she was above the oneway mirror, she had to be around 12 feet. Her neck was thick with muscle and veins and was protected not only by her massive pecs but also her massive traps. They were large enough to go beyond her neck and were even getting close to her head. In terms of her width, she was her shoulders contributed a lot to it (alongside her hips), being around 130 inches each meaning her body was about 9 feet wide, quite a power figure. But it wasn't just powerful, her larger hips still made sure that she looked feminine even if in a more non-traditional way. She also started to appreciate just how large her arms were now. Her 80-inch biceps put every pro hero to shame, not to mention villain. Most would think she would've had a strength quirk with a body like hers. Momo really wanted to flex her arm but didn't want to stop masturbating. "Urg, at a time like this I really wish I had a partner." she thought to herself, but she could do remember that Mei was watching her so she tried to make a show of her body. All over her body, she flexed different muscles, while doing so her abs caught her attention. Though most of her body was impressive and her abs were no different, with her 6 pack becoming mighty 8 pack something about them really got her attention. When she looked down at her legs she started to understand more. Her thigh was around 156 inches and was large enough to get rid of her thigh gap, while her claves were around 80 inches. She now understood why her body seemed so erotic. Her big power muscles contrasted with her still feminine face, soft silky skin, and her still round behind. It's just so fucking hot, this is not even to mention the power. With the completion of this realisation, Momo finally came, covering the floor with her liquids.

With this now done Momo's mind drifted to what she should do next. Obviously, she wanted to fuck someone but who? Should she spread this gorgeous body type around or keep to herself? At this point, Mei had lost the ability to think crucially, Momo's provocative posing might have short-circuited her brain a bit, especially considering how she never had to deal with feelings this strong before. For Momo this was a great thing she now had free reign, they were a secure system built in that might have caused her a minor amount of trouble but now she was free to do what she pleased.