Hivemind Control

When Twilight and Rarity returned, it was time for Twilight's daily administration. Rarity had already had hers, given several hours before she'd come to take her test. She was also looking much better, having scrubbed all of the colourant out of her mane and tail. She was relieved to find that the bugs were all gone, returned to Fluttershy in mostly healthy condition, if a bit battered.

Rarity immediately moved over to the closet, sorting through her belongings and arranging them in such a way as not to detract from her new master. Not that she had a lot right now, regardless, as most of it was just pony care equipment she'd been assigned, but still, it was currently more than what Twilight was carrying, and even Cercus didn't have very much. He did have some very nice clothes, though.

Twilight, however, appeared disturbed, as if dreading something coming up. As Cercus popped open a fresh bottle of potion, she watched wordlessly, and when he offered it to her, she took a deep breath. "You said you had a plan for the other three. What all needs to happen for them to join us?"

Cercus set the bottle down on the dresser. "I suppose it is time for an update. I've already finished the negotiations. First, we have to make you ready to appear in Ponyville, then take you, Rarity and Rainbow back home. Temporarily, you will all be staying in the castle until I can lower your necessary doses. Your castle will be my satellite hive. Once it's properly prepared, a process you will aid in once we return to Ponyville, Applejack will be brought in and shifted accordingly. Then Pinkie, and finally Fluttershy."

"And will they have to go through the--" Twilight's mouth locked up. She'd tried to talk about the test, and had found herself unable. She tried to rephrase her wording, something she foresaw needing to do a lot of in the future. "--Through the same set of circumstances given to us?"

"In their own way, yes. Applejack will be made to lie to her family, Pinkie will be made to prepare for a party that's not fun at all, and... I'm still working on Fluttershy's test."

"What about Rainbow?"

"She's going to lose a series of races and be publicly shamed."

Twilight took a deep breath. "And that's all we have to do to return to Ponyville? Run Rainbow's-- Make her-- You know what I mean. You claim her as your own and I learn to transform? We can go home and start bringing back our friends?"

"Not quite," smiled Cercus. "One more thing."

"And what's that?" asked Rarity, coming out of the closet.

"Something she has to beg for," answered Cercus. "Which I had her do as part of her own test, but making her beg for it doesn't count. She has to beg of her own accord."

"Beg for what?" asked Rarity. "What's he talking about, Twilight?"

Twilight sighed. She was hoping Cercus had forgotten, but she was going to have to do this sooner or later. Best to strike it now, before it became the only thing left on the list. Besides, he'd already been up her arse, and experience told her that this was easier. Rather than answering Rarity's question with her words, she grabbed the potion and chugged it. With the chemical in her system, she leaned back, grabbed her ankles, and looked up at Cercus.

"I want you to fuck me. Please."

Rarity looked, wide-eyed, between Twilight and Cercus. She had no idea what was going on.

Cercus just laughed. "You call that begging? There's no desire. Just resignation."

"What do you expect?" asked Twilight. "It's not what I really want, but something I have to do."

"If I may," offered Rarity, "you can have me, instead. If it would spare Twilight the indecency, I--"

"No, this isn't something you can do for her," said Cercus, "though I appreciate the generosity of taking one for the team. This is something Twilight has to do."

Rarity thought for a moment, then she rushed over and whispered something into Twilight's ear. Cercus couldn't quite hear what she said, but Twilight nodded and pulled herself upright and to the floor, crawling under Cercus' torso and pressing her lips against his slit. With an encouraging nod from Rarity, she stuck her tongue inside, trying to coax his tip out. Her play was successful, and she quickly sucked the whole thing down her throat as soon as she could.

Rarity once more whispered something in Twilight's ear, and she quickly pulled away. "I love this thing," she moaned. "It's spectacular! Any mare in Equestria would want to have one inside of her!"

She turned around and made a show of using her tail to direct it to slide along her slit, which was still pretty dry, but beginning to slip. She was preparing for him, all the while letting out soft little moans. Twilight was making an absolute fool of herself trying to put on this act. Cercus knew it was an act, but he let her carry on anyway. She didn't really want his cock, but she wanted to want it. She was trying to crave for his touch, and that denoted the same kind of effort.

With one final cue from Rarity, Twilight pressed her chest to the bed, spread her back legs, and used her front hooves to hold her lips open, whining cutely as she began to drip. "Please, Mr. great big stallion!" she called. "Tear up my insides with your cock! I need you more than anything! Please!"

Well, now. That was certainly a call not likely to be ignored. Cercus could even feel the desire in her. Forced as it was, she was lustful, and she truly did want to be filled. Who was he to argue? He lined himself up, pressed his way in with ease, and began to fuck her, just as she had begged. She was keeping her eyes closed, meaning she was likely not paying close attention, and if he pushed just a little, he might be able to determine just what their plan was.

Thrust after thrust, he slammed into her, and he could feel her mood shift from trying to enjoy it to actual enjoyment. She was pushing back against him; he could feel it. He didn't have the capacity to last too much longer, but she wasn't very far off, either. As he picked up the pace, she tightened around him, and for the first time since she'd fallen under his control, they came together.

"That was good, Shiny," muttered Twilight, having lost herself in the fantasy. Her words were breathless as she crawled into bed, her climax having exhausted the last of her energy for the day

Rarity's jaw dropped. As Cercus tucked Twilight into bed for a nap, she rushed over. "I told her to think of somepony she truly loved!" she whispered. "That's her brother!"

"Well, we all have our secrets," he chuckled. "You're to keep that one to yourself."

Normally, Rarity wouldn't go spreading such things around, especially not without talking to Twilight about it first, but Cercus' order locked it in place. There was no way she was telling anypony.