Their mother and a few friends!

Finley and Sarah excitedly watched as their mother Katie and their friends Amy, Anna and Liam were pushed into the room, naked and with their wrists and ankles tied, before the door closed behind them. All four of them screamed as all the silver parasites in the room crawled towards them and leapt at them. As Amy, Anna, Katie and Liam fell to the floor they were swiftly swarmed by all the silver parasites. Finley and Sarah delightedly watched as their silver parasites formed a writhing pile until all four victims suddenly stood up, sending all of the silver parasites flying across the room except for each of the ones attached to each of them. Amy, Anna, Katie and Liam broke and removed their restraints, then approached Finley and Sarah. Finley screamed in euphoria as he admired the identical sexy femboy Liam while Sarah screamed in euphoria as she admired the identical curvaceous girls Amy, Anna and Katie.

Arriving at the two beds, Amy and Katie each lay back on a bed and spread their legs wide. As Finley chose Katie and Liam chose Amy, the two femboys stepped up to the two girls and plunged their massive cocks deep inside their long tight cunts. Embracing Katie and Amy respectively, Finley and Liam started lustfully fucking Katie and Amy. They moaned in immense pleasure as the matching protrusions lining their dicks and slits slickly rubbed together while several silver parasites swarmed and fondled their sexy bodies. Finley and Liam thrust harder and faster as Katie and Amy moaned louder and quicker, soon fucking as hard and fast as possible. Suddenly they screamed together in **** climax and explosively gushed silver from their mouths, chests and butts. Finley and Liam powerfully came silver from their massive cocks, coating Katie's and Amy's long tight cunts and filling them up with silver.

Anna and Sarah screamed in euphoria as they heard their brothers and sisters scream in **** climax and they saw silver spill off the beds and splash on the flooded floor. They knew two new parasites would soon be created, and couldn't wait to create another two as well. When Finley, Liam, Katie and Amy eventually emerged from their intense orgasms and moaned together in satisfaction, Sarah and Anna quickly replaced Katie and Amy. Amy and Katie lustfully gazed at Finley, Liam, Sarah and Anna as they rubbed their oozing slits while watching them lustfully fuck. Finley and Liam thrust harder and faster as Sarah and Anna moaned louder and quicker, soon fucking as hard and fast as possible, while Amy and Katie masturbated harder and faster as they moaned together louder and quicker, soon masturbating as hard and fast as possible. Suddenly they screamed together in **** climax and explosively gushed silver from their mouths, chests and butts. Finley and Liam powerfully came silver from their massive cocks, coating Sarah's and Anna's long tight cunts and filling them up with silver, while Amy and Katie forcefully came silver from their gushing slits. Suddenly a massive silver lump erupted from each of Amy's and Katie's spewing cunts and splashed on the flooded floor.

Finley, Liam, Amy, Anna, Katie and Sarah relentlessly fucked and masturbated together, producing hundreds of silver parasites that swarmed and fondled them to enhance their pleasure. Their corrupted minds never thought to stop fucking and masturbating until their play was interrupted by the nearby door opening.