Eileen led Ty down the stairs and closed the door to the basement behind her. She sharply turned the heavy lock and began to pant. She stared down at Ty, who was waiting patiently, and laughed nervously.
"This is so surreal." She commented, amused with the sheer absurdity. "I'm... I'm about to... not be human."
"I don't have to..." Ty began, but Eileen quickly cut him off, hugging him at the bottom of the stairs and watching his awe as she jiggled her huge tits in front of his face.
"You started this madness, my young friend. We're going to see it through now." Eileen excitedly sauntered over to the couch in the middle of her large furnished basement and plopped down, splaying her arms over the back and taking a long deep breath. "Besides," She whispered, grinning as he egged Ty on with one come hither finger. "How weird and wonderful will it be to change species entirely? I might be the only one in the world to experience such a thing."
Ty began to shake now, realizing she was onboard with his perversions, and stepped forward.
"All right." Eileen let out her breath. "I'm ready. Just take it easy, okay? Let's, uh... let's take it slow. Let me... let me ease into this."
"O-Of course." Ty took a deep breath. He looked at Eileen, spread on the couch and dressed in his most favorite outfit. He pictured a toucan in comparison to Eileen. Perhaps some sort of scale between them. Yeah! Like percentage of human to bird. He took a deep breath, concentrated, and willed it forward. Start at 1% bird.
Eileen jolted suddenly and her face went into a decisive O of surprise. Her skin raised in goosebumps. Cool energy began to course through her. She stirred on the couch and gasped slightly, looking down at herself and raising her hands. Ty realized that small barely perceptible bumps had appeared and remained over her entire body. Her half bare legs were showing raised skin in a strange hexagonal pattern. Her arms were the same. Up her neck it seemed to taper off, leaving her face uncovered.
Eileen raised her arms, shaking, and gently brushed one hand over her flesh.
"Incredible!" She whispered. She turned her focus to Ty and smiled. "Come here, honey! Come closer! Come and see what's happening to me!"
With minor hesitation, Ty stepped forward sheepishly. Eileen took his hand in hers, helped him forward, and sat him down next to her.
Ty could now see that Eileen was entirely covered in small barely evident bumps. Except for the softest parts of her body, her palms, the bottom of her feet, her face, her skin had grown just a little bit rougher.
Sitting next to her, Ty stared up into her beautiful brown eyes and the neighbor mom smiled. "You can keep going. I'm okay with this... at least, right now."
"Okay." Ty took a breath. He closed his eyes, and decided to push it further. 5%. Slowly, though. Very slowly and gently. He didn't want to hurt her or overwhelm her.
Eileen jolted again, letting out an involuntary oof. She began to pant a little, her body no longer able to sweat, and felt cool and somehow simultaneously hot waves wash over her. Ty opened his eyes and saw the woman next to him in rapture. Her head was back, her eyes were closed, she was breathing through clenched teeth.
"Oh, wow." Ty whispered.
"S-So... intense." Eileen moaned. "So... good."
Ty watched as the bumps on her skin grew coarser. They raised and enlarged, becoming more prominent. It was happening very slowly, just as he had desired. He had ample time to look over her body, her fingers clenching and seeming to pulsate. He heard small cracks inside of her, as if cracking joints, and for each sound she moaned a little.
"I'm... changing..." Eileen gasped, pitching forward suddenly, eyes wide with shock. "Inside! I can feel it!"
Ty's own eyes widened as he saw Eileen's nipples grow pointy and hard under her dress top. Her expression only grew more astounded and she moaned out loud again, deeply and erotically. She clenched her fingers into the couch cushion and he watched her toes curl. Her nails were growing darker. And... and her feet! Her toes were... becoming webbed?
She fell back against the couch again, startled, and simply stared at the opposite wall in either amazement or horror. It was impossible to tell which.
"Eileen?" Ty blinked, trying not to stare at her big pointy nipples, outlined under her top.
"My guts are different." She whispered in shock. "I felt... felt them changing."
She raised her hands up and they both gasped. Her pinky finger on each hand had grown in size, stretching longer and thicker. It was decidedly inhuman and strange. Experimentally, Eileen flexed her fingers one by one and noticed that her fingernails had grown longer and sharper. She looked down at her feet, wiggled her toes, and found the nails had changed the same way, and...
She raised her foot, twisted the lower leg over her lap, and touched the new fleshy links between her toes. Her skin was now bumpy, rough, and she rubbed her hands over herself, caressing her shoulders.
She saw Ty staring in awe and smiled evilly. "Hmmm." Without much warning, she reached back and undid the knot holding the front of her dress up around her neck. It fell down and revealed more of the rough skin over the front of her torso, stopping above her enormous breasts, held tight in a fairly silky bra.
Ty stared at the two huge orbs and the even more obvious outlines of her tightly aroused nipples.
Eileen giggled, seeing his reaction, and looked down at her almost nude front in amazement. She traced down her boobs, under them, and realized her belly button was gone.
"This is so weird." She admitted. "But... a good weird. Pleasing weird." She looked over at Ty and planted a quick kiss on his cheek. Ty gasped and blushed deep red, his bulge seemingly throbbing tighter.
"Keep going." She insisted, staring at her bizarrely off fingers. Were they longer, too? Yes, they were definitely a little longer.
Ty granted her request. 10%. He opened his eyes and gulped.
"OH!" Eileen jumped, and began panting again. Her skin grew deeper in color. From a bronzed beige to a darker cream. All over, she began to sprout little black hairs. Ty gasped as he realized what was happening.
"UNNNNGHHHH!" Eileen moaned, feeling a thousand tiny needles erupt from her skin at once. "Oh my God!" She cried, trembling in agony. "Oh my God! Oh fuck! Ow! Ow! Ow!"
Ty decided to speed up that part in a panic, watching as the needle tips quickly accelerated and the cores of her new growing feathers began to take on a softer more fluffy shape.
"Ahhh...." She winced, slumping her shoulders. "T-Thank you, love. That was... not a good feeling."
They both stared in shock as Eileen saw her hands. Her pinky fingers had now almost tripled in length, and thickened dramatically. Her hair, meanwhile, was converting into feathery protrusions instead of strands. The needle points of her developing feathers had also speared through her dress, causing thousands of tiny holes to emerge as they poked through and started to grow.
All over, in fact, save for her face and beneath the knee, she was now sprouting and growing dark feathers. Eileen carefully stood up and was startled by the millions of pins that had put perfect neat holes into her leather couch as well.
"I'm quite the pin cushion." She managed to giggle. She stared down at her feet and realized that her big toe, pinky toe, and middle toe were growing in size, while the other two were shrinking into the now thicker webbing between her toes. She flexed them experimentally and realized that the skin below her knee was growing especially rough and hard, while staying feather free.
"Ty, darling..." She reached up and touched her face, her bizarre extended digits making her relearn how to bend her fingers. She curled her pinkies in and found them no less flexible than before. Her lips were pressed out further. Her mouth was extended. Her nose was pulled down in the strangest way. "I think I'm starting to get my beak."
"Yeah." Ty stared in awe. "I think you are too."
"And, uh... I think my clothes are ruined. Would you undress me?"
"W-What?" Ty gaped.
Eileen turned, smirked, and giggled. "Well, we need to see all the changes, don't we?"