Make her yours

Lina's nipples had gone rock solid and her pussy felt like it was blazing with a sinister lust. She was still slick from ravaging her sister, but Stacy's mewing brought brought new power into their equation. At first, Stacy was a helpless, Lina's for the the taking, but now she could be screaming for help, but was not. She was clay in Lina's hands, ready to be molded. Lina felt her parasite's joy seeing her sister beg for release, but she was still in control.

Stacy however was wild eyed, wrapped in animistic heat. The parasite bent back at her entrance was firm and throbbed gently, not strong enough to control the girl and too bound to free itself. Stacy could hear the creature groping at her mind, but overwhelmed by the **** needed to cum.

Lina stalked over to the bed, nearly skipping, each bound sending her plump ass into the air for a moment of weightlessness. Without a moments hesitation she launched herself onto the bed beside Stacy. Running her hand down Stacy's tummy slipped a finger past the worm and inside her sister's already dripping cunt. Stacy rocked against her bonds, and moaned:

"Pleeaaaase. Make me cum."

"Why should I? Lina said playfully as she slid her finger along stacy's slit.

"I'll do whatever you want, I'll be your ****." Her breath now coming in panted moans "Just please make me cum, I beg you."

"You will regret this bargain later" Lina said ruefully

Then she pulled Stacy's parasite from her like a sword slowly drawn from a sheath. The sex soaked worm uncoiled and bounded erect from between her lips. Lina pushed he sister to the side, tipping her so that she could spoon the naked girl. Stacy looked down at the creature monolithic-ally protruding from her luscious teen body. She watched in awe as Lina hugged her from behind and slowly pushed her cock into the wet folds of her pussy. If it looked big before, but it felt absolutely massive as it filled her. She could feel her lips stretch wider than ever before and it just didn't seem to stop as it probed further and further inside her. Lina entered stacy at a painfully slow rate, and each bump from the creature rocked her senses. Her mouth was agape watching the whole scene, taking in every sensation as the pleasure built. Finally, her sister was hilted inside her and she came. The mass of ejaculate jolted from her member, and she could hear the worm cry "YES" in her head. Her eyes fluttered as muscles in her pelvis pumped loads of cum onto the bed. Stacy's worm rocked as Lina held her tight, barely moving.