Mythical Onsen

 

 

 

 

Second and third pics are a split version to be easy on the eyes, text is the same.

Sauce: https://yande.re/post/show/132631

Text:

There are rumors of spots that possess body-changing magic when certain conditions are met. When the two TG enthusiasts, Rei and Haru, unexpectedly caught wind of a possible lead, they knew better than to get their hopes up, but they immediately planned the trip anyways. Supposedly there was a particular onsen, a small place high in the mountains, where they could change their bodies into any form they wanted—anything at all, as long as it was human. All they had to do was immerse themselves in the water, and as long as they legitimately believed that it would work, their fantasy could finally come true.

They brought along their friend Kim, who didn’t really care about this kind of stuff, but was trustworthy enough to keep the secret. It was night by the time they arrived, and already a little cold, but fortunately, the old man at the gate let them in, and they discovered that the water was still running at the now-deserted bathhouse. Rei and Haru went in first, closing their eyes—but although they eagerly imagined the female forms that they wanted, nothing happened at all. But then Kim dipped himself in, and shortly after—they saw him swimming around as a normal, but cute-looking girl with short pink hair!

With his heart beating, Rei focused his mind again. His body became super-sensitive to the feeling of the water, feeling hot against every pore of his skin. His breath felt hot and heavy, his mouth just above the surface of the water. He imagined the kind of girl that he always wanted to be, or at least try out—very long black hair, sharp brown eyes, and a shapely, but still reasonable, body. He thought he could feel something changing, but he wasn’t ready to open his eyes just yet. Both he and Haru were more into the girl’s life aspect of gender bender, rather than thinking of it as a fetish, but as he felt himself changing, his mind inevitably crossed over to the more sexual side. As his now-female butt brushed up against the wooden wall of the pool, that was all that was needed to get him thinking—what if she had an ass? He could feel his butt continue to grow, and his chest as well to compensate. It felt wrong to mess with the image of his own ideal girl like that, but it was also weirdly cathartic, and he allowed it to keep going just a little more, while resisting the urge to get aroused. But, with the hot water swirling around him, he could not get an idea of the extent of his proportions. As his rational mind started coming back, he was getting legitimately curious about what he looked like.

Now out of the water, she could feel the sheer mass of the new ass attached to her backside—and feeling it together with her large, but not-quite-as-ridiculous tits, she knew that she needed to hop back in soon. With every cautious step, she could feel the movement of the volume of her thighs around her hips as her body tried to balance itself. The cold air quickly made her uncomfortable, the water rapidly evaporating from the enlarged surface area of her rear end.

She jumped up in shock, clutching her breasts, when she felt a warm finger pressing hard in the new area. It was her friend Haru, who also had larger-than-expected tits and ass, though at least she was properly proportioned. She knew that Haru liked long, pink-haired genki girls—they’d talked about their preferences before. But she could tell that she had gotten carried away as well, since her friend had said that she only wanted a smallish to medium size for herself, and clearly something similar had happened to the both of them. She wanted to tease her back—or at least get her to stop—but even if she wasn’t stunned from the embarrassment and the new sensations, she knew that she had no standing.

Just then, an alarm sounded outside, and a minute later officers came rushing in—yelling that, apparently, the volcano was about to erupt! Not even letting them get their things, they rushed the three girls outside in bath towels, leading them into a small bus with a few of the local residents. As they sped down the mountain road, they could see the light of a fresh lava flow as it consumed the resort.

---
Finally, the work of the mountain was done. Other groups had come before and found nothing, but that was because they had been unaware of the additional nighttime condition… After having covered its tracks with the eruption, the spirit diffused into the air, ready to move on to the next peak.