Dr. Ivo "Eggman" Robotnik paced the gleaming metal floor of his latest fortress, nestled deep within the jagged mountains that bordered the Great Forest. Through the panoramic windows, Mobius stretched beneath him-lush, green, and tantalizingly out of reach. Always out of reach because of that wretched blue hedgehog.

"This ends today!" he muttered, stroking his mustache as he gazed at the containment unit in the center of his lab. Inside floated Sonic, suspended in a greenish fluid, unconscious but alive. Tubes connected to the hedgehog's body pulsed with a luminescent blue energy.

"Magnificent, isn't it?!" Eggman gloated to his cowering robot assistants. "My Vital Essence Extractor doesn't just drain chaos, energy, it depletes his entire life force, right down to the cellular level." The scientist's glasses gleamed under the laboratory lights. "No more super speed, no more spin dash, no more annoying quips. And more importantly-" he leaned closer to the tank, "-no more future generations of blue pests."

The machinery hummed as it systematically extracted everything that made Sonic who he was-his speed, his strength, his vitality-storing it in glowing canisters nearby. But Eggman wasn't content with merely neutralizing his nemesis.

"Bring in the fox and echidna. " he commanded.

Metal doors slid open, and two robotic guards dragged in the struggling forms of Tails and Knuckles, bound in energy shackles.

"What have you done to him???" Knuckles roared, straining against his restraints.

Tails' eyes filled with tears. "Sonic! Can you hear me??"

Eggman laughed, the sound echoing off the metallic walls. "Oh, he can hear you, He just can't do anything about it." He approached a control panel, fingers dancing across buttons. "And neither will you, once I'm finished!"

From a compartment, he retrieved two small chips, each no larger than a fingernail. "My neural interface chips, Direct connection to the pleasure and pain centers of the brain. Complete motor control override when activated, And you two will be my first test subjects."

Despite their struggles, Eggman's machines held Tails and Knuckles immobile as he implanted the chips at the base of their skulls. Sonic could only watch through half-lidded eyes, too weak to even scream.

"Perfect." Eggman purred, checking the readings on his monitor. "And now for the final piece of our little game."

Hours later, Amy Rose awoke in a circular chamber, her wrists bound to a steel frame. Her hammer was nowhere in sight.

"Sonic?!" she called out, her voice echoing. "Tails?? Anybody?"

The door slid open, revealing Tails and Knuckles. Relief flooded through her-until she noticed their eyes. Vacant. Mechanical. Wrong.

"Guys? What's going on?" Her voice trembled as they approached, moving with unnatural precision.

From speakers overhead, Eggman's voice boomed: "They can't hear you, my dear. At least, not really. But they can see you. And they've been programmed with some very specific instructions."

Knuckles reached for Amy's restraints, his face expressionless as he tore them away.

"Don't do this.." Amy whispered, backing against the wall. "This isn't you. Fight it!!!"

"They can't fight anything anymore" Eggman's voice mocked. "And neither can your precious Sonic. He's watching, you know. What's left of him. I thought it would be fitting for his final memory to be of his closest friends taking what he never had the courage to claim, your virginity!."

Tails approached from the other side, his twin tails swishing in an unsettling rhythm. Both moved with purpose, crowding Amy into a corner.

"I'll never!-" Amy began, but Knuckles' strong hands gripped her shoulders, pushing her down onto the chamber's single piece of furniture, a kingsize bed.

Amy struggled, kicking and thrashing. "Stop!!! This isn't you! Sonic will save us h-he always does!"

"Sonic is gone." Eggman's voice informed her coldly. "Accept your new reality."

Tails' hands moved with mechanical precision, finding pressure points that made Amy's resistance weaken. Despite herself, her body began responding to their touch, a betrayal that brought tears streaming down her face.

In the observation room, Eggman watched three screens-one showing the chamber, one showing Sonic's weakening life signs, and one displaying the neural activity of his two puppets. He smiled as Amy's resistance gradually faded, her body arching despite her mind's rejection.

What he didn't notice was the small fluctuation in Sonic's readings-a tiny spike of rage and determination that shouldn't have been possible in his depleted state. Nor did he see the shadow moving through the ventilation system above-a black hedgehog with red stripes who had picked up a chaos energy disturbance unlike anything he'd felt before.

Shadow remained motionless, in the ventilation shaft, his crimson eyes narrowing as he observed the scene unfolding below. The black hedgehog's intervention would have to wait, Eggman's security systems were too strong now for him to do anything.

In the chamber below, Amy's struggles gradually weakened against the methodical advances of her mind-controlled friends. Knuckles' powerful hands pinned her wrists above her head, his body pressing her into the mattress. The echidna's face remained eerily expressionless, yet his body responded with primal instinct to the programmed commands.

"Please.. don't do this to me~" Amy whispered, a final plea as Tails approached from the foot of the bed.

The fox's twin tails swished with mechanical precision as he removed her red dress with calculated efficiency. His blank eyes scanned her body as though analyzing data rather than appreciating her form. Amy shivered as the cool air of the chamber brushed against her newly exposed skin, goosebumps rising along her pink fur.

"Commence phase two." Eggman's voice commanded through their neural implants.

Knuckles released Amy's wrists only to reposition himself, his large hands now exploring her body with programmed thoroughness. Despite herself, Amy's breath hitched as his strong fingers kneaded her sensitive areas, her body betraying her mind's resistance. The echidna's exploration became more focused, more intimate, drawing involuntary sounds from Amy's throat.

"Stop fighting it!" Eggman's voice echoed through the chamber. "Your body knows what it wants, even if your mind refuses to accept it!"

Tails positioned himself between Amy's legs, his twin tails wrapping around her thighs to hold them apart. The fox's methodical approach contrasted with Knuckles' increasingly forceful attentions. As Tails lowered his head, Amy gasped, her back arching off the bed despite her determination to resist.

"No... please.. ahwn!~" she moaned, but the sound carried an undertone of unwanted pleasure as Tails' ministrations continued with scientific precision.

In the observation room, Eggman increased the neural stimulation to the chips, watching with clinical interest as Knuckles and Tails responded by intensifying their attentions. The doctor occasionally glanced at Sonic's containment unit, ensuring the weakened hedgehog remained conscious enough to witness his friends' violation of Amy.

Back in the chamber, Amy's resistance crumbled further as her body responded to the dual assault on her senses. Knuckles had moved to capture her mouth with his own, silencing her protests while his hands continued their relentless exploration. Tails meanwhile had found exactly the right rhythm with his tongue, drawing increasingly desperate sounds from Amy's throat.

"That's it!" Eggman's voice encouraged through the speakers. "Give in completely."

Amy's hands, no longer restrained, found themselves clutching at Knuckles' powerful shoulders rather than pushing him away. Her mind still fought, but her body surrendered to the sensations overwhelming her. Tears streamed down her face as the first waves of unwanted pleasure began building within her.

Tails withdrew only to reposition himself, his blank eyes staring into Amy's as he aligned his body with hers. Knuckles moved to her side, one hand still exploring while the other guided her hand to his own arousal. The programming was meticulous, ensuring that despite their vacant expressions, their bodies performed with maximum effectiveness.

"No.." Amy whispered one last time. now her body copied Tails movements and pushed forward, joining them together in one fluid motion.

Her back arched, her voice breaking on a cry that echoed through the chamber. The fox maintained a steady, relentless rhythm, his twin tails still wrapped around her thighs, spreading her wider. Knuckles moved Amy's hand against himself in time with Tails' movements, his other hand continuing its skilled manipulation of her most sensitive areas.

The combined sensations proved too much. Despite her mental resistance, despite knowing these weren't her friends but merely puppets controlled by her worst enemy, Amy's body convulsed in a powerful orgasm, her moans of release echoing through the chamber.

"Perfect." Eggman's voice purred through the speakers. "And we're just getting started!"

As Amy collapsed into involuntary shudders, Knuckles and Tails switched positions with mechanical efficiency, ready to continue the assault on her senses. In the observation room, Eggman laughed triumphantly, unaware of the black hedgehog watching from the shadows... 

After multiple days and countless assault sessions, Amy was already completely surrendered to pleasure and the desire inside of her. Sonic  by the other side was in the worst moments of his life. Eggman decided he was going to put him out of his misery, he disconnects rapdly the equipment and takes Sonic out of the machinery, Sonic was weak, malnourished, defenseless. Robotnik sends his guards to leave Sonic's half-alive body in the middle of the forest, never to be seen again.