Jon was home alone. For now. It was time to explore.
He looked into the full length mirror in front of him, seeing the beautiful woman inexplicably dressed in barely fitting boy's clothes. The hoody's sleeves and legs of her pants way too long, and the hoody generally fitting extremely awkwardly on her - resting bunched up on the gentle flare of her hips. Her thighs were clearly stretching the pants and Jon could feel how constraining they felt around his behind. That needed to change.
His heartbeat went up as he took a deep breath in. One last look into the mirror, placed the magic stone on the ground, and he begun to wriggle himself out of his clothes as fast as he could, feeling his body jiggle and move in unfamiliar ways as he did.
Eventually he felt the air against his nude body. He felt his long hair tickle his bare back. He felt his thighs touching each other, even though he was standing straight. And he felt the absence of an organ in front of his groin. And he felt the presence of the two breasts clearly hanging off his chest. Yes, hanging, as he was surprised at how clearly he could feel the point of skin-on-skin contact, of where the shapely mass of his boobs folded and rested an inch or so below where they were actually attached. Not saggy - beautifully teardrop-shaped.
The woman in the mirror looked like a cross between his mother, his original self, and Milana Vayntrub. Actually, he was surprised by just how Vayntrub-esque was her beauty type. And very similar proportions, albeit he knew he was shorter.
There was no denying the woman in the mirror was hot. The sight of her naked body turned Jon on. And the awareness that this body was actually his, and that he was now stuck as this sexy creature with no way out, that simultaneously freaked him out and drove him even wilder.
Low in his belly, he felt soft, warm, throbbing pleasant sensation. A very female arousal. He kinda expected his nipples to harden as well but they didn't - just sitting there pink, and about half more as big as he was used to. He was about to learn that a lot of TG fiction he read in the past is actually bullshit, and female nipples aren't some magical sex-triggers.
Slowly, he lifted his arms and cupped his breast with his hands. Each of his breasts was half-covered by his "hand-bra", with their lower, rounder half nestling in his cupped hands. He was struck how he not only could feel their soft flesh in his hands, but equally so, could feel his hands on the skin of his chest. It was so weird - he thought - to have those things on his chest. He could feel the way his ribcage had them attached and supported their weight. But they were also a part of his body, not some external, wearable "additions". And so, Jon could also clearly feel the sensations coming from his breasts - the touch of his hands, the skin-on-skin contact with his ribcage and the general presence presence of a bunch of inert mass, with no mobility of it's own, just hanging there freely by gently stretched skin and tendons.
He looked in the mirror once again at the hand-bra. Hot. He lifted his hands a bit, feeling the weight of his breasts settle in his palms and their pliable volume kinda spread out. He felt a bit more of the skin-on-skin contact as his boobs touched gently in the cleavage created by his impromptu push-up hand-bra.