Tim began backing away from Linda, she being his Satyress sister. He thought not to dare turn his back to her for fear of what she might do, as from what she had become, might do to him.
"Oh Tim, dear brother of mine look at me, look me in the face and tell me truly, am I not more than just your sister, I am a Satyress, and my reason for living is to feel pleasure from males." Linda said, though knew some of what she said was a ploy. She felt so horny, had a dire need for feeling sexual sensations. Indeed the virus had her become a satyr female, as unbeknown to Linda or Tim, she would continue to change physically and mentally until she was a nymphomaniac. The lust for sexual feelings excited the disease and rushed onward her changing until she would become a doe goat. As even then the passion for sensation would degrade her mind, leaving her in time as a dumb animal.
Tim was near to the open bedroom door-doorway when he foolishly turned and gave a glanced look toward Linda. As their eyes met, her glared stare at him took control of his cherishing love for a sister, she held him in a state of suspense.
"Close my bedroom door there brother of mine!" Linda ordered of Tim.
Tim did as he was told, and closed the bedroom door, seeing and thinking to press the locking button in the center of the knob, thus assuring the two of them there privacy.
"Good boy, now come to me, yes come closer, do kneel here and prepare to do for me what you joked about with your friends." Linda said, her tone of voice then more demanding Tim to obey.
Tim came to stand and then to knelt before Linda, their mutual gaze never breaking as his eyes felt the burning stare of a evil Satyress.
"Begin now to exploring me according to what you wished you could do to impress your friends. I am more than your sister, I am a sexy Satyress. So then poke out the tip of your tongue and give me that manly slurp of a lick." Linda said, she coaxing her brother to do to her what she had wished of so many a male friend should, would, or could.
Tim shivered when the tip of his tongue parted the nether-lips surrounded by dense goat fur. At that instant of his touching the infection was traded by bodily fluids to taint another person. Linda moaned as she felt a wagging tongue invade her body, finding new delight and worth of a brother to her plans for seeking ever greater manners of sensations.
Tim knelt there enthralled by his delving tongue doing to a female what his friends said he would never dare to do. He was infected and aroused as he strained to seek deeper along the vaginal canal of his furry fun giving sister. He was caught, held in a trance tweaking his mind to obeying a voluptuous, Satyress sister. Tim reached his hands up and grabbed at the furry buttocks on Linda and used them to compress his face snug at her labia lips. In that same enthralling male instance Tim felt his taught morals as fading, he being a male this act of scenting a female was a correct method. His sister was more animal than human so noted mentally. She became more than voluptuous, she was erotic, and he enjoying the oral pleasuring of her.
Tim continued his oral play and felt a slight pain in each eye what distracted his delving. He did not know that pain was his human eyes conforming, changing to then rectangle shaped pupils, they different in color too, being goaty bright chrome-yellow. The infecting virus advanced quicker in a person being young, as the age Tim was being in his teens.
When Linda felt she wanted more as new sensations from Tim, she forced him to retract the wagging tongue, and to look up at her.
As Tim cocked back his head to gaze up at his lust loving sister, she seeing his face made her to smile. Tim had grown a furred muzzle replacing what was his human shaped mouth and nose. In fact an essence of goat was about his whole face, a providential reality that told Linda, her dear brother would become a goat soon. His ears too had accepted the transition, they broad, flat, as hanging down along the furry sides of his head. The lusty stare of Tim made her laugh, as urged Tim to laugh, his mouth and lips coated thickly with drying vaginal slime.
The faster massing changes began to envelope Tim, he twitching his head as felt of sharp pains about his forehead.
"Ow...baa...!" Tim expounding said as a half furred hand reached up to touch at his paining forehead. He feeling and felt of, his fingers touched the harsh points to a pair of goat horns protruding then his scalp. A second more of harsh pain came with the further protrusion of the horns, they causing a trickling of blood to trail down across his furry face.
"Wait there my cute buck, remain kneeling while I open my bed!" Linda said, as Tim obeyed.
The Satyress laid on her bed and with her furry legs spread, she looked at Tim and said, "OK there my cute buck, come to me as show how you boasting with your friends said you wanted to pleasuring me!"