As Trevor and Carter came to terms with their new female forms, Heather and Diana picked up the sound of curtains being drawn coming from the house they were currently in front of. The twined harpy, still unsure about whether or not their strange wing configuration would allow them to fly, ran over to the front door. Luckily for them it was unlocked, the resident presumably not thinking to do so out of panic. As the duo stalked through the house they took turns masturbating their cock, part of their mutation seemingly preventing their cock from going soft. This left a trail of cum and eggs behind them as they kept their senses open so they could find their prey.
Unfortunately for their victim, Heather and Diana’s enhanced harpy senses heard the creaking of the bedroom closet. The conjoined harpy lunged over to the door and tore it off, revealing the woman inside. She had dyed green hair that matched her eyes, chubby features, and was wearing a plain black T-shirt and sweatpants. The pair were taken aback however when they realized that the other woman didn’t have a look of terror on her face, but one of lust. As soon as she was revealed she dropped to her knees and began licking the mutants’ cock before attempting to take it down her throat.
The woman only managed to get it just past her lips before Heather and Diana let out matching cries and unloaded into her stomach, her abdomen building from the sheer volume of cum being pumped into her. Once the harpy had emptied their balls into the woman, they pulled their cock out and stumbled back onto the nearby bed.
The woman moaned in ecstasy as her mutation began, falling backwards as her arms transformed into copies of her legs. These new legs, alongside her original pair, then shifted so that when she stood on them her body would be held horizontally facing and upwards. Her shirt was then shredded by two more pairs of legs growing between the others, making her body resemble that of a spiders, albeit one with breasts and a human head. Her modest breasts then ballooned to a size similar to the women that infected her. Finally, a two foot long and six inch thick cock accompanied by a pair of watermelon-sized balls grew over her pussy.
Heather and Diana watched the newly minted mutant cum from the sheer joy of her transformation, her own cum added to the growing pool that covered the floor. Seeing this only reinforced the instinct to spread their condition to others and, after taking a second to practice flapping their wings alternatively, leapt from the window and began to soar away from the area affected by Kim’s cum, wanting to bring the joy they now experience to as many people as possible.