Pathways

It had been a month since Shining Armor's eyes had been opened to the pleasure of masturbation. While he often used his hard won wing boner magazine to aid his stimulation, his mind continued to wander ever more towards thoughts of his sister. He hadn't bathed with her since he got his cutie mark because his parents said so, but they didn't explain why. So besides the one time a month ago, he hadn't gotten more than a glimpse at those strange smelling lips between her hind legs.

All that was about to change one fateful day. It started like any other, but this would mark the beginning of the dark descent of Shining Armor's life. Waking up as he did most days, he found himself faced with his new favorite activity. A month of experimenting with various methods helped him hone his magic to pleasure himself better than his hooves ever could. On top of that, he had all but perfected the art of catching his cum right as it spurted out.

His carpet had suffered a few more small stains due to trial and error, but all of them were conveniently covered by a nice rug he convinced his mom to get him. She was pleasantly surprised to hear her son was interested in sprucing up his room from the usual minimalist style his father taught him to hold to. She likely wouldn't approve of his true motivation, but what she didn't know wouldn't hurt her.

Not even bothering with the magazine this morning, Shining simply lost himself in the pleasure of stroking himself, freely allowing his mind to conjure up all sorts of fantasies. Many of them involving his sister's foalsitter Cadance, some were focused on his mother Velvet, but most of the time, including this morning, Shining Armor thought of his sister Twilie.

While his fantasies about his mother and Cadance tend to feature them in similar poses to the mares in the magazine, when it came to his sister, he only ever thought of his memories. Sometimes it would be the hypnotic image of her purple slit, but more often, he just let his wholesome memories of playing together flow through his minds eye.

Something about the innocent nature of his sister just excited him for reasons beyond his comprehension. He'd always been close to Twilight, he even got his cutie mark protecting her from a runaway carriage. He loved her more than anypony else, and would do anything to make her happy. Sure, Cadance and his mother were beautiful, but relatively speaking, he barely knew Cadance and Velvet is his annoying mother who makes him do his dumb chores.

Twilight is the cutest filly he knew, and she trusted him implicitly. He could tell she loved him more than any other pony. She always came to him when she had nightmares. He was the first one she shared good news with. The way she looks at him whenever he comes home from school, any time she finishes a new book, or the morning she taught herself magic. At that moment, Shining's ministrations finally coaxed out his first orgasm of the day. With practiced ease, he caught his load in his magic and floated it over to his dirty laundry hamper to soak it into the dirty towel near the bottom.

After a moment of basking in the afterglow of orgasm, Shining managed to roll out of bed just as his penis started retracting back into his sheath. Making his way downstairs, he was met with the sight of his mother putting on her saddle bags. "Hey mom, are you heading out?"

Twilight Velvet turned back to face her son. "Oh, Shining! Glad I caught you before I left. I was going to leave you a note, but I guess I'll just tell you I've got some errands to run. I'll be gone most of the day, but I should be back in time to make dinner. Can you make sure Twilight gets breakfast and lunch? She's been forgetting to eat during her magic practice."

Shining nodded and gave off a small yawn. "Sure mom, no problem. Did dad already leave for work?"

"Oh, yes. I should be home before him tonight though. Love you sweetie, see you tonight." With a kiss to Shining's forehead, Velvet made her way outside.

"Love you too mom, have a good day." Shining waved his mother off before closing the door and heading to the kitchen. I hope Twilie doesn't spend all day in her room. There's only so many more days of summer left and I've barely seen her since she figured out magic. After pouring them both some oat cereal, Shining went upstairs to wake up his sister, and or drag her downstairs for breakfast.

While Twilight was currently awake, pouring over her magic primer, she was less than enthused to have her concentration broken by a magenta aura and being levitated out of her room. "Ah! Shiny, I was reading that!"

"Yeah, but you've read it at least three times and you need food. Come on, as soon as you finish your oats, you can go back to reading." Shining merrily trotted downstairs with the filly in tow.

While squirming in the familiar levitation field, Twilight cocked her head at her brother. "Hey Shiny?"

"Yeah Twilie, what's up?"

"I just noticed we have the same magic color."

"Huh, you sure?" Shining gently placed Twilight at the table before levitating out some spoons.

"Yeah, take a look." As Twilight lit up her horn, she overtook Shining Armor's magic aura around one of the spoons. Sure enough, the color stayed constant as Shining let go and it floated over to his sister.

"Wow, that's pretty cool. Think it means anything special?" Shining just sat on his haunches as he started eating his mildly soggy cereal, just how he and his sister like it.

Twilight shrugged. "Probably just means we're close siblings. Or I might end up with a cutie mark similar to yours."

Shining perked up at that. "Huh, you wanna practice making shields again today? There's more than just bubbles ya know, and they aren't just for blocking attacks. You can bounce stuff off 'em and even use them as platforms if you can maintain concentration long enough."

"Maybe later Shiny, I'm still trying to figure out some basics like light spells, or holding more than one thing at a time. I may have read that magic primer a bunch of times but it still helps to read through the exercises when I try them."

Shining shrugged as he went back to eating his oats. Not having anything else to say, he let his mind wander as he zoned out. Occasionally glancing over to his sister, he couldn't help but notice how she had quickly downed her cereal and was now just lapping up the milk with her muzzle. Wonder if she'd notice if I came in her cereal. As his eyes popped wide at the intrusive thought, Shining nearly choked on his latest bite of breakfast.

"Shiny! Are you okay?" Twilight was at his side in an instant trying to pat his back as Shining sputtered and coughed.

"Y-yeah Twilie. Ahem, sorry I just swallowed too much at once. I'm good now." Giving off a few final coughs, Shining managed to offer his sister a reassuring smile.

Twilight furrowed her brow for a moment before relenting and floating her bowl to the kitchen sink. "If you say so Shiny. I'm gonna go back to reading now. I'll let you know if I wanna try practicing shields again."

"Sounds good Twilie. I'll let you know when it's lunch time." With that, Shining downed the rest of his bowl in a few gulps and followed Twilight's example. While she left to go back upstairs, Shining just made his way to collapse on the living room couch to ruminate. Am I doing something wrong? Rubbing my dick feels really good, but... I always feel bad about thinking of Twilie while I do it, but I can't stop thinking of her.

Shining sighed as he rolled onto his side and stared down at himself. As he furrowed his brow, he got an idea. Before he could go through with it though, he needed to double check something under his bed. Jumping off the couch, he galloped upstairs to his room, nervously biting his cheek as he opened his door and quickly levitated out his wing boner magazine. While he was visibly excited, this time was very different from how he usually felt when digging out his stimulation material.

As he masterfully made his way to the section of the smut he spent the most time on, his pupils dilated as he once again beheld the sapphic twins. However, instead of focusing purely on their initial featured page, he turned to the next, revealing them in various lewd poses. It wasn't long until he found the short article where they talk about their taboo relationship.

Scanning the blurb, he sought out what he had read once before after one particularly vigorous session of jerking off. 'We were always close as foals, but when we started experimenting around the time we got our cutie marks, we just grew closer.' If it worked for them, why can't it work for me and Twilie? I'd love to grow closer with her, and Star teaching me about this stuff helped us grow closer as cousins... even if he pulled that dumb prank.

"Hmm. Hey Twilie?" After not receiving an answer, Shining made his way over to his sister's room for the second time that morning. However, with his illicit material resting on his back, this journey seemed to stretch on much longer as he wrestled with his conscience. Twilie doesn't have her cutie mark yet, and I've had mine for a while, and I was her age when I got mine. I wonder if this was the reason mom and dad said not to take baths with Twilie. But it's not like I'm doing anything actually bad right? Mom and dad get mad about lots of stuff like not eating all my alfalfa, or tracking mud in the house. So if they find out they'd just yell at me right?

Shining was broken from his deep thoughts when he bumped into a door. He found himself standing outside his sister's room. Breathing heavy, nostrils flaring, hooves shaking, mouth dry, and beads of sweat forming on his brow. "H-hey, uh.... Twilight? Y-you in there?" His heart was pumping in his ears as he tried to think of what to say. When he realized Twilight didn't answer, Shining lightly knocked on the door. Still no answer. Not trusting his magic, he lifted his hoof to the door handle and turned it before pushing the door open. He winced slightly as it released a faint creak, but his attention was stolen by the sight that greeted him.

Laying on her back as she levitated her book above her head, Twilight's tail end was pointing directly at the door, totally exposed and showing off her fillyhood. As if in a trance, Shining slowly shuffled forward until his muzzle was a hoof away from the slightly moist slit. As his breath disturbed the purple fur in front of him, he noticed a slight twitch before he was snapped out of his reverie. "Shiny? What are you doing in my room? It isn't lunch time yet."

Shining quickly backpedaled and sat on his rump before he started stammering out an answer. "W-well, I w-was just wanting to ask you s-something." He tried to force a relaxed smile, but it just ended up as a rictus grin.

Twilight furrowed her brows as her ears drooped. "Shiny, are you okay?"

"Oh, totally, yeah. I just, ya know, thought of something and I wanted to ask you about it because I thought you might be interested." Shining's tail was twitching from his nerves and he could feel the magazine that had slid off his back.

Twilight's ears perked back up as she tilted her head in confusion. "Okaaaaay? What did you want to ask me?"

With his heart nearly pumping out of his chest, Shining had to force himself to take multiple deep breaths. How did Star do this? He didn't seem nervous when he showed me the magazine.

"Shiny? You sure you're okay?"

After one last deep breath, Shining closed his eyes and cleared his mind. When he opened them, his blue irises met purple and his nerves were replaced with a sudden calm. "You know I love you, right Twilie?"

Twilight blinked a few times before giving her brother a bemused grin. "Yeah, I know you love me Shiny. You're my BBBFF."

"Good, because I do, and I am. I love you more than any other pony Twilie. More than mom, dad, Star Hunter. I would do anything to make you happy." Shining's face finally relaxed to a serene smile as he poured out his heart.

Twilight smiled broadly as she stared into her brother's calming eyes. "I love you too Shiny. I know you'd never do anything to hurt me. You make me feel safe." Not wanting to just sit there awkwardly, Twilight jumped off her bed and nestled between her brother's front hooves, and burring her face in his chest floof.

In response, Shining wrapped a hoof around her back and held her tight. It felt good to be close to her, better than he remembered her hugs feeling. When he leaned down to nuzzle her head, he took in a deep whiff of her lavender scented mane.

Twilight suddenly backed up ever so slightly and looked up. "Uh, Shiny? Are you poking me with your magic? Did you not want a hug?" When she looked down to see if there was a magenta glow, she noticed something strange. Before her eyes a mottled black and white shaft was gradually growing out of her brother's sheath. "Shiny? What is that?"

Scooching back on his rump while grabbing the magazine in his magic, he spread is front hooves a bit more to show off his growing member. "That is part of what I wanted to talk to you about." With a small twinge of nerves, he once again took a deep breath before continuing. "To answer your specific question, this right here is my penis. I recently learned about it from Cousin Star."

"Huh, is that where you pee?" Twilight's eyes went wide for a moment. "Do you need to pee right now? Go to the bathroom! Quick!" Before she could start shoving her brother out of the room, Shining held up a placating hoof.

"No, no. I don't need to pee. It just gets like this when I'm... excited." Twilight decided to sit a bit farther away from Shining and eyed him dubiously, but didn't protest further. "My penis is where I pee from, but it isn't just for pee. There's something else it can do, but before I tell you anything else, I need you to promise me something."

"Uh, sure Shiny, what is it?"

Shining looked his sister dead in the eye with a look of intensity that made Twilight shrink back a bit. "Whatever I tell you or show you today, you can't tell mom and dad about it."

Twilight gave a confused frown. "Why not? Is it bad?"

Shining's mind went back to another part of that article about the twins. 'It wasn't always easy. When our parents finally caught us, they freaked out, said it wasn't right. It didn't stop us though...' "Some ponies might say it's bad. Mom and dad might get mad if they find out, but what I want to show you will help us grow closer than ever before. Does that make sense?"

"I guess. But what is it?"

Shining's intense stare once again bore down on his little sister. "Twilight, I need you to promise me you won't tell anypony, ever! Not mom and dad, not anypony at school, not any guards, not even if Princess Celestia asks. This is a secret between you and me. We have to keep it that way. Otherwise, somepony might try to separate or hurt us."

Twilight was practically shaking as she stared up at her imposing big brother. "O-okay Shiny. Please don't be mad at me."

Shining Armor blinked before he realized he had stood up and started glaring. Shaking his head, he sat back down and relaxed his features. "Sorry Twilie, I didn't mean to scare you, and I could never be mad at you. I just need you to understand that this is super serious. But it's worth it if we can grow closer. I just want to show you just how much I love you instead of just saying it."

Twilight inched closer to her brother and put a hoof on his. "It's okay Shiny, I understand. I promise I won't tell anypony. I want to make you happy too. You protect me all the time, you keep me safe when I'm scared. I want to do something for you too."

Shining gave a wide smile which caused his sister to return the gesture. "I'm glad to hear that sis. I've been thinking about this for a while, and there's still a lot I don't know, but I'm gonna be teaching you about sex."

Over the next hour, Shining explained everything he knew to Twilight. Everything Star Hunter taught him, everything he found out from experimenting, and the various nuggets of "wisdom" from the wing boner magazine. He made sure to highlight the twins specifically and how he came to the idea of sharing everything with Twilight. Half of the time was spent fielding questions, but he was happy to answer them to the best of his ability.

For her part, Twilight seemed to absorb all this knowledge like a sponge and gave her brother her undivided attention. At one point she tried taking notes, but Shining warned against it, not wanting to leave any trace of what they were doing. If their parents found the magazine, he would get in trouble. If they saw notes made by Twilight, either both of them or just Twilight would get in trouble and Shining wouldn't risk that.

Once he had imparted all the knowledge he could, he just let Twilight look through the magazine and read all the articles. He hadn't read all that much of it, and she seemed interested in learning all she could about this subject. "Huh, so apparently, when family members have sex, it's called incest. I wonder why more ponies don't do it?"

Shining Just shrugged "I dunno Twilie. Maybe lots of ponies do it, but they just hide it because grown ups made dumb rules against it. But if Star thought it was okay, it couldn't be that bad right?"

Twilight finally looked up to her brother. "I guess. From everything in the magazine, it sounds like some ponies just have different things they like. Maybe it's just rude to talk about this stuff with other ponies?"

Shining Slowly nodded as he thought it over. "Yeah, I guess that makes sense. Plus Star was acting all secretive. Maybe there's an adult conspiracy keeping this knowledge from fillies and colts."

"That would explain a lot of mom and dad's behavior. Like how they can take baths together but we can't anymore." Twilight's ears drooped as her body sagged.

Shining's eyes shot wide as he gave a broad smile. "Ya know Twilie, mom isn't gonna be home until later today. We could take a bath together while she's out."

Twilight looked up at her brother, clearly confused. "But mom and dad said not to."

"Did they ever explain why?"

Twilight had to think about that for a moment. "Huh, not really no. They just said it wasn't right for fillies and colts our age to do that."

"But mom and dad do it all the time. Why can't we?" Shining's wide smile had relaxed into a knowing grin. "In any case, we're probably gonna need baths today. We might as well take them together."

Twilight tilted her head as her ears perked up. "What do you mean? Did you want to teach me more about shield magic?"

"Nope. I wanted to help you orgasm. If yours are anything like mine, it will probably make a mess," Shining said, still grinning.

Twilight blinked in surprise. "Huh, well that does sound kinda fun, but how do I do it? I don't have a... penis." She barely whispered that last word, but Shining was close enough to hear clearly.

"Well, those twins are both mares but they can still make each other orgasm, we just have different bits." Thinking back to the magazine in question, the alabaster colt got an idea. "W-why don't we just, ya know... start with a kiss and go from there?" As he felt heat rise to his muzzle, he noticed a mild crimson hue come to Twilight's otherwise purple coat.

***Sex incoming. Go to the next chapter to skip the sex scene***

"O-okay Shiny," Twilight whispered as she closed her eyes and parted her lips. Meanwhile, Shining armor was sweating bullets as his heart was beating out of his chest. Not wanting to keep his sister waiting, he licked his suddenly dry lips and slowly leaned down, gradually shutting his eyes. Right as their lips met, his eyes closed and he felt a shiver run down his spine.

A small jolt of pleasure raced through his mind and in his eagerness, shot his tongue into his sister's mouth. "Mpf! Shiny! What was that?" Twilight suddenly broke the kiss and backed off a step, eyes wide in panic.

Shining threw up his hooves in placation. "Sorry, sorry! I got a bit excited. I thought we were supposed to do that. Are you okay?"

Twilight grasped her chest as she forced herself to breathe deeply. "Y-yeah, I j-just... yeah. I just wasn't expecting that." Once she regained her breath, she looked back up to her brother. "Actually, I kinda liked it... I think. Do you think I could try doing that to you?"

Shining just gaped a moment before he could answer. "Y-yeah! Of course, that sounds great!" He couldn't help but smile before remembering the severity of the situation, but even as he regained his composure, he couldn't stop his tail from wagging. "You ready?" With a nod from his sister, she fixed him with a half lidded stare as she opened her mouth a bit wider this time with her tongue barely poking out.

Once again, Shining slowly made his way down to meet those purple lips, making sure to keep his mouth open and tongue out of the way. This time however, he kept his eyes slightly open as Twilight did the same, just barely peaking out of her hypnotic eyes, they engaged in a sensual staring contest as Shining egged on his sister's tongue. He poked and prodded it with his own, gently sucked on, and wrestled with it. Once their curiosities had been sated, they began exploring each other in earnest.

Shining began fighting back, but just enough to keep evenly matched with Twilight's tongue. As their eyes finally closed once again, Shining pulled his sister in close and began groping her flanks with one hoof as he dragged a hoof through her mane. All the while, Twilight was just holding onto him for all she was worth, wanting to be as physically close as possible. Soon, their dry humping lead to Twilight rubbing herself on Shining Armor's rock hard erection, throbbing between them.

Twilight was the first to break the kiss, but Shining was the first to speak. "Twilie, can we... can I?" With glazed over eyes and a string of saliva between their lips, Twilight fixed her big brother with a dazed look of half understanding. Not wanting the pleasure coursing through her body to cease, she was prepared to agree to just about anything to keep it going. To that end, she gave a resolute nod before reconnecting their lips.

With as much consent as he needed, Shining grasped Twilight in his magic and peeled her away from his body slightly, causing a whine to escape his sister before he once again broke the kiss. He planned to do as his instincts were screaming at him to do, but first, his curiosity would be sated. Laying Twilight down on her bed, face up, he took in the sight of her virginal fillyhood. After gulping down what little saliva he had in his mouth, he took a deep whiff of that glistening slit.

"Shiny? W-what are yo-EEP!" Twilight was cut off as a tongue lapped at her outer folds. "Sh--sh-shiny! W-wha-AH!" Her words melted into moans as her brother's tongue explored the inner walls of her vagina. As he continued exploring every nook and cranny of the pink hole, Twilight could feel a pressure building up all throughout her body, but especially in her groin. Shining's enthusiasm was only bolstered by his sister's moans of pleasure. Before he knew what he was doing, a small nub made itself known to him, brushing against his nose. Without thinking, he latched onto it, and sucked on it like it was the last sugar cube in Equestria.

Twilight's moans turned into screams as her mind went blank with pleasure. "Yes! Shiny! Yes, yes, yes yes yes yes yes yesyesyesyesyesyesyesyes YEEESSSSSSSSSSS!" As her vision went white, she could feel all her muscles relax at once and she faintly noticed a wet spot on her bed sheets.

Before she could fully catch her breath, her lips were enveloped and a tongue once again invaded her sovereign mouth space. However, instead of pulling away, she fought back with her own tongue before her eyes went wide in a gasp. Shining Armor had penetrated her with his cock, and was slowly inching himself inside. "Buck, Twilie, you feel so good!"

As the siblings continued in their illicit affair their lust addled minds and primal instincts drove them forward down a path of no return. As Shining's movements picked up in tempo, his moans began to match those of his sister. "Shiny! Faster! Please!" Not wanting to disappoint, the young stallion accelerated his hip thrusts ever faster, heedless of the consequences.

For a single split second, he was granted a sobering moment of clarity. I'm about to cum inside Twilight. That's how foals are made. I shouldn't do this... but I can't stop now. It feels too good! Once the instant of clarity was lost, his will was fully given over to his animal instincts to breed. As his cock head flared inside Twilight, he kissed her and gave out a reverberating moan, perfectly matched by his sister.

As ropes of his virile seed shot inside the young purple filly, the siblings exchanged half lidded gazes as they panted from the exertion and euphoria. "I love you Shiny."

"I love you too Twilie." As his strength left him, Shining collapsed to the side of his sister as his dick slowly softened and returned to his sheath.