Big Mac sat in the living room, his legs up on the table and his flaccid cock drooped over a leg. He would’ve had his eyes close if the sights he saw behind his eyelids didn’t try and compete to the mare in the kitchen. He shook his head. Applejack was acting different lately, taking on more chores, and generally being more helpful and nice to him.

He grabbed the cider the doc gave them and took a long draught. There was something about the juice that always made him feel better, like an itch that just got scratched. He heard a few tentative footsteps and turned to find his sister carrying to plates of pancakes on legs that wobbled.

She’d been wearing more and more provocative pieces lately, today was no different. After hearing his suggestion, she went and bought a few new outfits, including the white lingerie she currently wore that showed off her assets.

Already, he saw the issue: A vibrator lodged in her pussy and was still on. He checked the remote next to him and found he forgot to turn it off when she left the room. He smiled as she set the plates down and sat on the floor.

“Hey,” he took hold of his cock. “You’re lookin’ a bit unwell. Need a show before dinner?”

Applejack bit her lip and looked down. “Ah want more than a show.” Her pussy ached, making it hard for her to think straight, and the vibrator slowly drained what remaining thoughts she had left. She moved in front of him and stared his rod down. His sister kneeling before him made it go full mast, awaiting docking.

“What’re you doin’, AJaaaay?!” he shouted as she slid her tongue along the underside of his cock, feeling the bumps of the veins as she brought it to the base of it and back.

“I’m just helpin’ ya out,” she said. “Like the doc said, our bodies are meant to get each other off.”

Staring at it, she felt a sudden need to take more of it. It was salty and stank of sweat from working out in the fields. She needed more. The first taste wasn’t enough.

She licked all the sides of it, giving light sucks, and her hand moved to massage his balls. Big Mac let out a groan, which his sister took as high praise. Putting her head back to the tip, she forced her lips around it and started taking it all into her mouth.

Inch by inch, she forced the cock’s head into her mouth, then started on the shaft. She got half way before her gag reflex kicked in, but this was for her brother. If it made him happy, then she was gonna see it done. Determined, she suppressed the urge as best she could and continued swallowing.

After a minute, she couldn’t breath. The head was blocking her air canal. Her eyes were watering, but she was so close. When her vision started to blur, her lips touched the base and she started pulling back. The shaft reappeared like a long necked turtle coming out of its shell.

Big Mac let out a groan, barely stopping himself from cumming. “Wh-Where’d you learn to do that?”

“Secret,” she said, her mind going back to the dildos she practiced on last night. Her hand moved to drenched pussy and she started to finger fuck herself. “Anything else ya’ want?”

Behind Big Mac’s eyes glowed the fire of Celestia’s sun. He knew what he wanted. “On the cou--” What was he doing?! Big Mac looked down at his sister, fucking herself while peering up at him, one eye covered by his cock. They were related by blood. No matter how hot that sounded, they could not fuck.

He clenched his teeth. He wasn’t about to take his sister’s virginity, if she still had it, no matter how much he wanted to. Applejack was still waiting for instructions, eagerly hoping he’d make her a living fleshlight. He wouldn’t, but her mouth and tits he could use.

“Get me off,” he commanded, sitting back on the couch. “Use your tits.”

“As you say, master,” she purred.

Applejack smiled and brought her hands up to rub around his cock, using her spit to lubricate it. She licked every inch of it making sure it was nice and slick before kissing the tip and bringing up her tits. They enveloped his cock in their folds and slowly slid along the length. Anytime the head was free from her mammaries, she gave it warm comfort in the confines of her cavernous mouth.

Big Mac clenched his teeth. He was close before, now he was on the edge. He felt the cum churn in his balls trying to escape. Applejack’s hand went south and caressed them for a moment as she stopped titty fucking him.

“C’mon, Mac.” She opened her mouth over the head of his dick. “Give me my drink already.”

His eyes went wide and she took the head into her mouth and starting rolling it over with her tongue. Tipping the balance, he let out a growl as he came, shoving his pelvis forward. Applejack locked her mouth over the head and drank as much of it as she could, but there was too much. Even after the morning masturbation, he was still full of sperm.

With a popping sound, he released his cock only for it to spray his seed over her face, and hair, before she fell back, and sprayed all over one dish of pancakes. After a few more seconds, Big Mac fell back in his chair, breathing heavily.

Applejack smacked her lips, a dreamy look on her face. She looked around for the morning’s cumrag and used it to clean herself off. Big Mac watched for a few second before looking at the now coated pancakes.

“Sorry ‘bout that.” He grimaced and took a drink of the cider. “I’ll go make you a new batch.”

“Nah, that’s fine.” She took the plate and stabbed a fork into it. “Your cum tastes like apples anyways, sure it’s no different from the syrup we use.” She dove into the pancakes, devouring them and even dipping some into the extra cum on the table.

Big Mac watched in a mixture of increasing horniness and growing uneasy. Something felt wrong, he just couldn’t put his finger on it. Shaking his head, he tore into his own plate of pancakes.

Mind Set looked at the clock; it was already almost noon. His room was dark, containing a single window that was covered by heavy, red curtains. He flinched at what little light the window let get through and put a hand up to his horn.

It burned at the touch.

He let out a growl at his growing migrain. Caster’s Burn. Most unicorns didn’t cast spells above their capacity, but he had multiple times. Every session he had with the Apples where he used heavy magic cost him two days in bed, unable to even go outside.

He closed his eyes, determined to go to bed and wait the sensation out.

His doorbell rang, sending spears of pain through his skull. He opened one eye, the world looking more bleary. He didn’t have any appointments, nor was there anyone scheduled to come. Memories of a letter returned and his eyes went mind.

Letting out a groan, he forced himself up in one smooth motion, bringing more pain into his mind than he liked having. He got up and looked himself over, noting he had fallen asleep with his robe on. Good enough. He took tentative, tiny steps out of his room, each one bringing a new level of pain as the windows outside of his bedroom contained much thinner shades, allowing more sunlight in.

He shimmied into the living room.

“There you are!” a familiar voice shouted from his left, sending him scrambling back as his vision clouded with black spots and his mind felt like it exploded.

Sitting in his living room was a mare he didn’t recognize. A buxomous beauty, to be sure, with tits clearly designed for nursing, but with a brown coat and form fitting clothes and a lovely golden necklace. Her wings flared behind her, a lighter shade of yellow, but on her face was a smile of true joy.

She looked at him, curiously tilting her head. “What’s wrong? Not excited to see me?”

He stood up straighter and motioned her to quiet her voice down. There was a faint buzzing coming from her direction. In a whisper, he asked, “Who are you?”

She giggled. “One second.” The mare closed her eyes and a faint pink glow filled the room as a horn appeared on her forehead and her coat changed to pink. Her wings still stood stiff, but her clothes changed entirely. There were vibrators on her nipples, in her pussy, and on her clit.

Her coat looked like it went through a cum bath and she didn’t bother to clean herself up afterwards. Her clothes were far more revealing, with everything important on display. On her thigh were the words “For My Subject’s Use” with an arrow pointed at her pussy, and another one pointed at her ass. Her golden necklace was replaced with a collar that read Slut.

This was definitely Princess Cadence.

Mind Set’s mouth went dry. If anyone saw her in this state, there would be inquiries and he’d wind up in a Canterlot prison cell or a chained up in Tartarus, if not a fate worse than those.

“Princess,” he said through gritted teeth. “What are you doing here? Don’t you have an empire to run?”

“Didn't you get my letter? I told you I was dropping by.” She placed her hands on her hips and leaned over, giving him a better view of her cleavage. She looked down at his dick, seeing it still soft. “What? Not happy to see me?”

“I’m in a great deal of pain, right now.” His eyes were only half lidded, trying in vain to keep the light out. “So, please, if you need to achieve release, do so and then we can speak.”

“Yes, sir.” Cadence walked over to the door, where a suitcase waited. She opened a side pocket and withdrew a large, thick dildo. Placing it on the ground, she bounced her hips up and down on it, her ass jiggling, enticing Mind Set to play with it.

The moment she let out moans, Mind Set’s eyes shot wide. He didn’t have silencing runes around his house yet. He hobbled forward, grabbing a pillow from the couch and shoving it into her mouth.

“Do you have a gag in-- of course you do.” He let the pillow drop as she nodded. “Grab it and put it on.”

Cadence pulled herself off the dildo, tendrils of her linking her pussy and its partner. She opened up another side pocket and withdrew a ball gag, hooking it around before strutting back to her toy. This time, she looked Mind Set in the eye as she pounded herself harder and faster, her mind begging him to join her.

Every moan of pleasure set pain through his mind. It was child’s play to resist.

After a few more minutes, Cadence let out a scream into the gag before peeling herself off and removing the gag, letting out a breath.

“I’ve been holding back ever since I got onto the train,” she said, disappointment flashing over her. “I was so looking forward to you fucking me like no other can.”

Mind Set clenched his teeth again, purposely pushing his mind away from the trigger words he left in her, ones that would leave her at his mercy.

“Princess, please sit down.” He guided her over to his dining table. “Why did you really come?”

“For you,” she gave him a wink. “I wasn’t lying, I really came for you and you alone.” She leaned forward in her chair. “I knew you were gonna be in Ponyville and you didn’t have access to any mare for sex, nor were you married…” She flashed him a smile again. “So, I thought why not come and help relieve you from the monotony?”

He clenched his teeth again. “While I appreciate the gesture, my Princess, won’t your subjects be worried that you suddenly disappeared?”

“Nope!” she said, obvious happy with herself. “Shiny’s mistress is currently taking my shape and duties in the Empire, so no one’s the wiser.” She levitated her bag over and took out a newspaper. On the cover showed Princess Cadence on her throne, her husband underneath her as the two fucked for the reporter. “That’s her. See? She’s doing a fine job.”

“But surely you’ll want to return immediately to help your subjects---”

“Oh, there’s one more thing!” She looked around for a moment before closing her eyes. Her horn lit up and the groove filled with magic. Energy coalesced around her horn, taking the shape of a key, before popping. She reached out to a small door in the air, opened it, and took something from within.

The rest of her magic dissipated as the object changed locations from a different plane to their own. A wave of energy his him, a wave of growing and inconceivable lust, threatening to overwhelm his mind and drive him to the brink of madness.

He felt his dick become stiff as an iron bar, his coat stood on end, he felt a growing need to get atop the mare and fuck her hard enough to shatter her mind, using every trigger to bring them both to orgasm after orgasm. After a moment the wave died down to an almost undetectable level and the stiffness he had send pain instead of pleasure up to his head.

His eyes scrunched closed and his hands formed fists. “What was that?”

“It’s something I thought you’d like.” She held it out to him. After a few more seconds, he reached his hand out and let one eye open. She dropped the object into his hand and he held it up to look it over.

It was a ring. The main portion of it was made of a black material, perhaps obsidian, that complimented his grey coat well. The interesting part was the bright red crystal used as the centerpiece. The material looked familiar, but wrong. The red gem was the origin of the wave of energy.

“What is this?” he asked, looking it over in the little light in the room.

“It’s a piece of the Crystal Heart.” Cadence smiled and took out some photos. “It’s changed colors. It’s now a hot red and any time we activate it, ponies still turn to crystals but with expansions to their asses, pussies, tits, and dicks.” She licked one of her fingers. “It’s a lot of fun.”

“While this is a good gift, I still think you should---”

Another set of hands pounded on the door, sending pain back through his mind. He looked around the room, noticing the dildo Cadence left out and the ballgag on the floor next to it.

“Clean those up and put back on your disguise, now!” he yelled in a hushed whisper. Cadence immediately set to task, turning her coat back to the brown and her horn disappearing. She wheeled her luggage and toys to the back of the house.

Mind Set checked his appearance in the mirror. He still looked disheveled, bags under his eyes, and his eyes were now bloodshot. Perfect.

He creaked the door open and in his best sick voice asked, “Whose there?”

“Howdy, doc,” the tall red stallion said. “Mind if Ah come in? We need ta’ talk.”

“Macintosh?” Mind Set looked at him with half lidded eyes, the outside sun feeling like it was assaulting him. “I’m sorry, but I’m not feeling well. Can this wait until another time?”

“Sorry, doc, but this is important.” Big Mac looked serious, meeting the doctor’s gaze with steely resolve.

“V-very well.” He opened the door wider. “Come in and take a seat.”

Big Mac entered just as Cadence stepped back to the living room. He froze, nearly scrambling back.

“Who’re you?”

Cadence froze before a devious smile grew on her lips. “I’m the Doctor’s new secretary, Rosey Fields.” She strode over and forcibly shook his hand. “Are you one of the his patients? If so, I’m sure we’ll get to know each other very well!”

“Ah, uh, well, Ah’m not exactly one of his patients.” Big Mac scratched the back of his head. “Ah just need a bit of advice from the him.”

Mind Set gave Cadence a glare that could kill. “Rosey, would you please go to the shop and pick me up some medicine?” He put up a fake smile for his patient. “I’m sure you’ll know which one to pick out.”

“Sure thing, boss!” ‘Rosey’ walked away, swaying her hips until the door finally blocked their view.

Mind Set sat in his armchair and Big Mac took the chair across from him. “What seems to be the issue?”

“Doc, Ah don’t mean to disagree with ya’, I really don’t.” Big Mac scratched the back of his head again. “But Ah’m startin’ to think my feelin’s for Applejack are illegal, of the mental kind.”

“What makes you think that?”

Big Mac told him about what occurred the prior night. Mind Set nodded along, hiding a smile behind his hands at some parts. Everything was proceeding smoothly.

“To summarize,” Mind Set said after listening, ticking off a finger with each point, “you looked out for your sister’s self interest, didn’t want to jeopardize your relationship, wanted to please your sister, and, in the end, chose to restrict yourself so you didn’t do something illegal all for the sake of your sister.”

“Yes, sir.”

He tapped his finger on the armchair, a plan forming. “Yes, the feelings you have are approaching boyfriend or husband type of thoughts.” Before Big Mac could speak he held up a finger. “But that is not bad. It means you’re a good brother and, maybe, a good husband.”

“But it’s wrong!” Big Mac bared his teeth. “It’s not right for a brother to want to fuck his sister!”

“Yes, yes, I agree. However.” He gave Big Mac a comforting smile. “I’ve read the history of those laws, and most of them center around relationships that were abusive in nature, usually akin to pedophilia and raising a husband or wife. What you described wouldn’t fall under that and, I think, would be an exception to the rule.”

“Ah,” he paused, trying to wrap his head around the idea. “What?”

“I’m not qualified for this, but I know someone who is.” The plan fully came together in his mind. “I think Princess Cadence could settle this issue on whether or not your feelings are bad or ones to be lauded.”

Big Mac’s eyebrows shot up. “That’s a great idea! If there’s a pony that can tell us about love, it’s her! AJ’s talked about her and how devoted she is to her husband.” He got up and rushed over to Mind Set, shaking his hand. “Thank ya’, doc! How long before you can ask her?”

Mind Set took his hand back, feeling the pain of movement hit him again. “I’m sure I can get her to you by tomorrow or the next day. Please, make the house presentable for her.”

“Will do, doc!” Big Mac rushed out the door, a spring in his step. Rosey, conveniently, was just outside and about to open the door and snuck in after him.

“What was he so happy about?” Cadence asked as she reverted back to her normal form.

Mind Set walked over to Cadence and grabbed her by the horn, forcing her to the floor. “What was that about being my secretary?!”

She gave him a sheepish grin. “I thought it’d be the best way to force you to let me stay.” She held up a bag. “I got the medicine you asked for.”

He let go and walked back to the table. “Princess, I’m going to need to put you to use tomorrow.” He let a genuine smile form on his lips. “How familiar are you with wedding ceremonies?”

Author's Note

I'm sorry! It just keeps growing and growing, scenes keep getting added and added! I swear, this arc will be done within the week that I promised, but next chapter will be the last one... hopefully.

Until then, enjoy more words.

Note: Still looking for an editor. If you're interested, please PM me.