Content Spoilers:
This story contains fetish material involving body growth as well as breast, ass and clit expansion, the latter of which results in a penis of unusual size. Enjoy!
*
Neyri stepped into the grove with hesitation. Motes of green, the forest's spirits, danced gently around the single beam of light at its center. She had heard the stories, of course. Those who went into the grove came back changed, no longer human. She thought she had resolved herself to this last night, while she tossed and turned in her bed. Yet she now reminded herself it was her last chance to turn back.
But then again, what had she left to lose?
She stepped into the light.
Neyri hadn't had to wait very long, as already one of the spirits noticed her presence and dove into her body, sinking into her bosom. A cool sensation spread through her body, but rapidly warmed. A second later, another spirit joined the first, then another, and another. Soon, her skin was glowing with primal potential as ancient magic took hold and began to change her.
The first thing she felt was a tingling in her feet, followed by a cracking sound as her shoes were torn apart. Her feet, now roots, spread and sank into the verdant grass below. Neyri gasped. The sensation was cool, moist and invigorating in a way she had never felt before. She began drinking, thirstily, for the earth's rich nutrients and the grove's power.
She saw the ground grow more distant as she began to grow, with the sound of creaking wood. Already she was six feet tall, and her clothes were being stretched away from one another as her limbs lengthened and her curves grew more pronounced. She ran her hand along her midriff, which had taken on a bark-like color, and yet remained smooth as polished wood and pliant as flesh.
She was eight feet tall now, and her pants were next to go. They tore in several places at once, freeing her legs and hips, which were now truly massive compared to a proportionally much smaller waist. It had barely even grown at all. With strength that surprised even her, Neyri easily tore off what little remained of her pants and undergarments, letting herself continue to grow free. Already, her sex was glistening with a sap-like nectar.
Her increase in height was starting to slow down. Realizing what was about to come next, Neyri hastily began to remove her top, then midway opted to simply tear it off. It wasn't as if she would have any need for clothes now. She looked at her modest breasts while the magic continued to creep upwards through her, letting the bark spread. She held her hands a couple of inches in front of her stiffened nipples, watching with anticipation, and...
Her breasts surged into her hands, filling them and then some. She drew a sharp intake of air as she found out how sensitive her breasts now were, even as they still continued to grow around her fingers. She kneaded her breasts, feeling sap fill her up and slosh through them. It felt warm in a way she already recognized.
She was storing up magic reserves there, she realized. Did this mean she could later give the gift she was receiving to others through her sappy milk? Or perhaps that was but one of the uses of the primal power she had become a receptacle for. Her mind raced with possibilities and, as if urged on by her thoughts, her breasts surged forward even faster, while she felt her roots draw power for the earth more insistently.
Her breasts grew, round and perky, already larger than her head and soon sizeable enough to match her hips. Had she caused this, she wondered? Did she have control over her transformation? She put this question to the test as she held up an arm, its flesh gradually replaced by bark. She had seen the drawings, heard the stories. She expected her hands to grow into gnarled, menacing branches, but willed them... otherwise.