Cream the Rabbit was out playing in a meadow near her home one day, as she often did, when she came across something shiny in the dirt. Investigating, the young girl was shocked to find what appeared to be a Chaos Emerald. "What's this doing here?" she pondered aloud. "I'd better get this to Mr. Sonic or Tails!" Dutifully, she dug it out, only for it to suddenly flash as soon as it was fully out and in her hands. She let out a cry, blinded by light and feeling a strange rush of heat and pressure flood through her body.
When her vision cleared, she found the gem gone entirely, confusing her. She also felt as though her dress was too tight for her... Looking down to investigate, she realized that there was suddenly a large pair of breasts blocking her vision! Examining herself further after the shock wore off, she quickly realized that she'd grown up in an instant! She had full, rounds breasts, a thick and wide behind, and... something bulging between her legs, straining her panties. She blushed, suddenly having an understanding of her newly adult body, and knowing what was under her now very short skirt. A hand involuntarily slipped down to rub at the bulge.
She gasped as her panties gave up the fight, releasing her now erect cock that throbbed and rubbed against the brim of her dress' skirt. It was long and thick, over a foot in length, with a pair of heavy, fat, virile balls beneath it. She blushed as she couldn't get rid of her sudden arousal, cock now fully on display as she couldn't get herself to calm down. All she could do was try and relieve the building pressure she felt. Instinctively, the now 18 year old woman began to stroke her shaft with one hand while groping at her huge F-cup breasts with the other, moaning loudly as she gave in to the pleasure. She couldn't help but think of all the attractive women in her life as she jerked off in the field, a primal and lustful part of her mind desiring to breed them, to fill them with her seed. With a gasp, she came hard, splattering the grass with her thick, white cum. Finally, her cock began to soften again, though even limp it was large and hard to hide.
She blushed, figuring that she needed help to resolve this bizarre situation. She had gone from little girl to stacked futanari (she didn't know how she knew that word, but it seemed to fit for some reason) in an instant, and she knew she needed to find some way to fix this and go back to normal.
Cream decided to ignore the part of her mind that was interested a very different sort of help...
Who does she go to?