It was a late evening when Twilight entered Canterlot archives. Luna’s moon was looming throught the window above as Twilight stepped into the chamber filled with bookshelves and trotted forward.
”That spell must be here somewhere…” she thought to herself while looking around the shelves, as she had gotten permission from her mentor, Princess Celestia to look for one particular spell she needed for scientific purposes.

She had told Princess Celestia about her wish revisit to one of her childhood memories, but she didn’t want to risk altering the timeline with any kind of time traveling. Luckily there was a way around it and Celestia was willing to tell her about such spell:
A mix of memory and illusion spell which could make its caster re-live a past event of their memories for 30 minutes, without changing the future, since the event had already happened in the past. They could still feel and sense everything, interact with others and experience the event like if was present. But what was the most interesting about it, was that the caster could slightly change the event by acting differently within it, thus experiencing the different outcome of the event. Of course all of this cost one magical crystal that was VERY expensive, but Celestia was surprisingly generous to provide Twilight one, trusting her to explore as much as she could.

Although, Twilight wasn’t actually telling the whole truth. She did want to visit one particular event in her past, but not exactly her childhood. There was one moment before she was sent to Ponyville a couple of years ago, a moment she revisited in her memories while lying awake in her bed at night.

Some very arousing memory…

She remembered one time her brother had stormed into the bathroom while she had been there, using the toilet while she was watching. She had been too embarrassed to act in that moment and just later she had thought about how it could have gone differently. With that spell she was now looking for, she could experience that very moment once more - and see if she could make it different.

”Oh, there it is!” She said out loud suddenly, pulling out an old sealed scroll from the shelf. ”Let’s see… Concentrate your magic while keeping the crystal close… Use the crystal as a conduit for this spell… You have 30 minutes to spend in the illusion… Once the time is up, the crystal breaks and you’ll be sent back to the present…”

Twilight set the crystal next to her and did what the scroll told, activating her horn to cast the spell. Nothing happened at first, but after a while the crystal started resonating and soon it was sparking before her, purple clouds starting to form around Twilight. She was a little scared of such light show, but decided to keep going. "This really wasn't such a good idea!" her senses were screaming, but she couldn't stop anymore. She kept casting the spell while the clouds engulfed her completely, with the crystal exploding in a blinding light with a bang!

***

Twilight opened her eyes after a brief moment. She wasn't hurt, apart from feeling a little dizzy after what had happened just seconds ago. She noticed she was in the middle of brushing her mane in a room that looked both pretty familiar and strange. She looked around the room and soon recognized the place: this was the bathroom of her childhood home in Canterlot. Everything looked just like that day she had in her mind!

”It really worked!” Twilight squealed in excitement, ”This is it! I can’t believe I could actually-!”

Twilight was surprised when she suddenly heard the door slamming open with a bang. She stopped on her tracks and turned her head to look at the door. She saw her dear brother Shining Armor standing by the door, looking furious and alarmed. He closed the door behind him and rushed towards Twilight.

"Oh, Shining!” she said to her brother. ”You’re really-”

Shining stumbled close to her in a hurry and pushed her into the empty bathtub next to them.

"MOVE ASIDE!" Shining yelled and didn’t seem to care whether he was hurting his sister.

Twilight fell into the bathtub and was dumbfounded, she hadn’t remembered this particular event! She climbed on the edge of the tub pretty annoyed and snarled:

”Hey! You should really-

What happened next was the same as before: Twilight’s mouth slipped open as she saw the oh-so-familiar view in front of her; Shining’s obsidian and a quite sought-after penis was emerging from his sheath, growing into a veiny sausage that resembled a trunk of an elephant. His cockhead was the size of a foal’s hoof and droplets of his urine were already falling from the tip.

He grabbed his stallionhood with his right hoof and tried to steady his aim, leaning to the wall with the left. And just like before he missed the toilet a couple of times as he kept his eyes shut because of the bright lights, while his stream was forming.

Once he finally aimed in the right way, he let out a loud groan and his stream became stronger and stronger, creating a healthy splattering sound as he aimed his junk in the middle of the toilet.

”Here we go again!” Twilight was excited, feasting her eyes in the sight of Shining’s fifteen - no, 16-inched gushing length. It wasn’t even hard and it was twitching along the pressure it was releasing. The air was filled with the masculine scent of Shining’s musk and urine.

Suddenly Shining snapped back to reality. He noticed Twilight standing next to him, staring at his member as he urinated.
”Um… Morning, Twily!” he grinned in embarrassment, unable to cut his stream.

”Wow, Shining!” Twilight replied in delight, not taking her eyes away from his priced stallionhood, ”You didn’t tell me you were packing THIS much!”

”You’re really gonna watch?” Shining blushed as he kept going. He had thought Twilight would be looking away in disgust instead of actually enjoying herself!

”Why not?” Twilight smirked back, ”We’re family, remember! I’ve seen that thing of yours a couple of times before. It’s not like you couldn’t do it in front of your sister!”

”Fine, do what you want, I don’t care!” Shining turned his gaze back to his stream. Not that he hadn't ever done this before, he still didn't feel that comfortable doing it while somepony was watching him, especially if they were girls. Nevertheless, he decided to put his shame aside and not care, the only thing that mattered to him at that moment was to relieve himself. His stream arced towards the toilet in full force and wasn’t showing any signs of stopping as it splattered against the water.

Just like in her memories, Twilight felt a twinge in her stomach and she leaned backwards, her bottom pushed against the edge of the tub. She felt her clitoris beginning to swell, shooting against the edge as it winked out. Her marecum was starting to seep out.

Twilight didn’t envy her brother for being able to pee standing up, as she knew there was a spell for that: if she felt like it, she could transform her genitals into a stallionhood and let it fly. Maybe I should try that when I get home!

”You need help with holding that?” she asked jokingly and winked, making Shining shake his head in frustration. He really wasn’t in a mood of hearing compliments about his privates, especially not from his little sister!

Twilight giggled at Shining’s reaction at first, but then she noticed something different:

To her surprise, she noticed Shining’s glans was starting to flare, he was becoming aroused! Shining squinted his teeth and blushed as he felt more and more inches emerging from his sheath, making his already massive schlong even bigger. Soon he was completely exposed in front of his sister, his proud flag pole throbbing in his hoof. He needed to push it downwards to redirect his wandering stream back to the toilet. This was the reason he didn't like witnesses!

”Holy guacamole, Shining!” Twilight gasped in awe, instantly regretting such a stupid comment. Really, you could do better than that!
”S-Sorry, Twily!” Shining said in embarrassment and tried to look away, ”It just… Does that sometimes!”
”Sure… Especially when I’m around!” Twilight replied teasingly, causing Shining to roll his eyes.

”Cadence sure is a lucky mare!” She thought, unable to get her eyes away for her brother’s towering member. His flare was definitely bigger than her hoof! She couldn’t help but think how that thing would FEEL inside of her, could such a heretic horsecock even fit in her pussy?
”Should I touch it?” Twilight wondered in her mind, ”There wouldn’t be real consequences because it never actually happened like that… Maybe I should…”

Twilight snapped out of her thoughts as she heard Shining sigh in relieve. He had went over for a minute and half, almost two minutes before his stream had started slowing down to a trickle and his flaring tip was shooting the last couple of squirts of urine into the water. It seemed he was desperately trying to think unarousing thoughts to make his erect member soft. It didn’t take too long for his cock to go limp again and soon it hung down in his grasp like a semi-flaccid hose, dripping some excessive droplets of his urine down to the bowl in a steady beat. Twilight kept watching and couldn’t look away, as she was anticipating what would happen next.

Soon Shining got himself together and started shaking himself dry, trying to get every last drop off his tip. Drops of his urine were flinging around as he did it.

”Wohoo! Shake it, Shining!” Twilight cheered out loud while her brother’s meaty length swung like a fire hose, ”Show that dick who’s the boss!”

Shining cringed at such remarks and flung some of his drops at Twilight’s direction in revenge, some of them landing on her snout and cheek.

She gasped at the sensation. This was something completely new, she had actually altered the outcome of the event!
Realizing that she was positively winking against the edge she was leaning on.

”If you wished to get a guy, you REALLY should come up with some better pick-up lines!” Shining chuckled and turned back to his screen, giving his cock a couple of last shakes until he let go of his member and flushed the toilet. Noticing his man-meat getting hard again from the extra attention his sister was giving it, he turned around and stumbled to the sink next to him, not caring to put the seat back down.

Twilight wiped her cheek and sniffed her hoof, smelling the remnants of her brother’s musky urine. There was something in the scent that was driving her terribly wild and she felt something rising from deep within: the urge to have passionate sex with her own brother! She didn’t travel all the way back to this moment just to watch his brother shake his junk!

”You alright, Shining?” Twilight broke the brief silence, ”Are you feeling sick?”
”I’m fine!” Shining replied while splashing cold water on his face, ”Just a… Little hangover. Nothing more!”
”Um, okay!” Twilight’s eyes wandered around the bathroom as she thought about saying something to lighten the mood. She knew it was now or never.

”You know what, Shining?” Twilight said while climbing out of the bathtub,”What you just did was so hot!”
”TWILY! Please… Let’s not talk about it!” Shining blushed and lowered his head.
”Why?" Twilight asked worryingly, "Didn’t you at least enjoy it?”
”Twi-!” Shining felt his flaring member slap against the bottom of the sink, making him feel even more uncomfortable.

Twilight walked next to her brother, noticing he was hiding his erection. She felt a need to soften the mood somehow.
”Well… I did! I liked it very much!” Twilight admitted and blushed, ”You shouldn’t be ashamed of your… Umm… Cock…”

”It’s! It’s not like that!” Shining closed his eyes and sighed, ”It’s just… You know…”

”What?” Twilight was genuinely confused, but after a brief moment of thinking she understood the whole picture, ”You… like me that way? Do you?”

Shining sighed and opened his eyes.
”Y-yeah, I do…” He said while turning his head towards Twilight, ”You’re important to me. I… I love you as much I love Cadence. But… It’s just wrong! You’re my little sister! I can’t lust over my sister… We’re family!”

”Shining… To be honest… I feel the same towards you.” Twilight smiled, ”It’s not wrong to feel like that, I don’t mind. I love you too, BBBFF!”

Shining remained silent and turned his gaze back to the mirror. He wasn’t sure what to do.
”You can turn around now!” Twilight reassured, making Shining reluctantly do what she asked. His massive erection was again on the display, making Twilight’s eyes widen, even though she had just seen it couple of minutes ago.
”Why, hello there!” She thought when she saw her brother’s schlong throb at her, feeling her already moist pussy becoming wet once more.
”Well… Yeah!” Shining replied while looking away, red as a tomato.
”You know Shining…” Twilight lifted her gaze from Shining’s member, ”You really can’t go outside with THAT out!”
”I can take care of that myself, thanks very much!” Shining replied in frustration.
”OR… You could let your sister tend it for you!” Twilight winked at Shining, making him startle.
”N-no, we possibly can’t-”

Shining was silenced when Twilight leaned towards him and pressed her lips against his, giving him a passionate open-mouth kiss that take him off guard. His eyes shot open in surprise, but he soon relaxed and returned the kiss, pulling his sister closer. His penis was sandwiched between their bodies, throbbing against Twilight’s belly and teats. She trailed her hoof down to put it on Shining’s member, starting to massage it while they kept kissing.

After the moment that felt like couple of minutes, Twilight broke out and sighed, staring into her brother’s eyes.
”Well, how about now?” she asked with a seductive tone.
”Twily… You… Are the biggest pervert I’ve EVER met in my life!” Shining replied, blushing profusely.
”Hah! YOU showed me YOUR dick, remember! Of course I need to respond!”
”Twily! It doesn’t work like that!” Shining shook his head, making Twilight chuckle.
"Hey, just enjoy!" She said with a wink.

Twilight surprised Shining by lowering herself towards his cock and giving it a wet lick from base to the tip, making him gasp. She tasted his salty precum that was seeping out, twirling her tongue around his glans until pushing the tip of it into the opening of his urethra. She then pulled her head up to meet his brother’s gaze and smirked.
”Mmm… You we’re saying?”

”I… I don’t remember anymore!” Shining huffed, shocked by the sudden forwardness of his once awkward and introverted sister, but he was also aroused by it. He wasn’t sure what to do, as he was worried of the taboo of incest, but he also wanted Twilight to have her way with him.

”I take it as a yes!” Twilight said with her eyes half-closed, making Shining's heart melt. He really couldn't resist such a sexy look. ”Now sit down, please!”

Shining obeyed and spread his leg apart, giving his sister more girth to work. Twilight purred and started planting kisses around his shaft, making him moan. Twilight's movements weren’t as confident as she thought and her pacing was too random for his liking, but she was surprisingly good at it. He wondered if Twilight had ever done it before with anypony. It was still his beloved sister doing it, so he closed his eyes and decided to enjoy the ride. His flare was getting bigger with every kiss on his stiff rod.

Twilight on the otherhoof tried to act more experienced than she was, but she couldn’t hide her excitement, making her miss her target a couple of times. She couldn’t actually believe it, she was kissing her brother’s penis for real! So many times she had seen it from the distance and only imagined how it would feel inside of her. Even though she was giving Shining just a regular, mundane blowjob, she was so horny she would surely orgasm at that moment, if she touched her clit.

After some time she pulled her head up and licked her lips. She gave one last look at the flaring phallus before her, calculating how much she needed to open her mouth to make it fit. She then proceeded to take it into her mouth, instantly feeling its warmth and masculine taste on her tongue. It didn't feel like a rock but like a muscle, being elastic and bendy as some kind of sausage, and she felt it throbbing faster against her jaw.

"A-aaaaah...!" Shining moaned, feeling his sister's mouth caress his tip. He felt like he would burst if she kept going like that. He fell from his sitting position to lie on his back, Twilight following suite.

Twilight's heart was racing as she tried to push Shining's member deeper into her throat. She was trying to give her brother the best head he could ever experience.

Unfortunately it didn't go like in erotic novels: as Twilight pushed it further, she realized it didn't feel comfortable. She started gagging around it, unable to take any more length in, tears forming in her eyes.
"Uh, Twily!" Shining opened his eyes and got worried, "You doing ok?"

Twilight couldn't take it anymore and pulled Shining's member out of her mouth with a pop, gagging for a second as she tried to catch her breath.
”Guh... Just s slight… Uh… Miscalculation!” She frowned, disappointed in her non-existent deep-throating skills. Of course she should have practiced it before trying!
She decided to try something else.

"Say, BBBFF..." she tried to change the subject, "You wanna give your mouth some good use?"

She turned around over Shining's body, presenting him her plot. Shining watched in awe as her pink clitoris winked in and out of her wet marehood in a steady rhythm, glistening in light and pushing out strands of marecum on his face. That sight made Shining's cock swing faster in Twilight's grasp and she lowered herself to give Shining's snout an access to her folds. Shining grabbed Twilight's rear with his hooves and pulled her closer, taking a whiff of her pheromones. He couldn't imagine how intoxicating the smell was and his cock shot a couple of strands of pre that trailed down his shaft.

Twilight licked Shining’s member and closed her eyes as she waited impatiently. She wanted Shining to plunge his tongue inside her before it was too late. And then it happened!

Twilight's eyes shot open as she felt Shining's tongue inside her vagina, brushing her tender flesh as it started lapping her juices. She couldn't concentrate on his cock, so she let go of it and raised herself to sit on her brother's face.
"Ah, oh yes!" She moaned in ecstasy and pushed her hips more tightly into Shining's face, "Keep going, Shiny!"

She grinded herself against Shining's snout as he kept licking her, enjoying the taste of her sweet nectar. The tip of Shining's tongue twirled around Twilight's vaginal opening and then moved outside to brush against her sensitive clit, making Twilight yelp. Shining pressed his tongue against Twilight's love nub and gave it gentle licks, making Twilight gasp and throw her head backwards.

"Ah! AAAAAAHHH! SHINIIIIIIIIIIING!!!" Twilight screamed and moaned as she reached her orgasm, her spasming marehood squirting a thick spray of marecum into Shining mouth. He managed to swallow some of it, savoring the forbidden taste of his little sister for a while as he was still licking her pussy. He felt his climax happening at any moment and squinted his eyes.

Twilight let out a sigh of satisfaction and saw Shining's cock spasming in front of her. She lowered her head down to take it's tip into her mouth, trying not to push it too far this time.

Feeling his cock being surrounded by his sister's warm and velvety mouth once again, her teeth gently pinching it as she bit it, Shining groaned and started thrusting his hips, making Twilight let his stallionhood out of her. It slapped against Twilight’s snout for a second and soon she was treated with a sight of it shooting huge ropes of cum upwards like a fountain, after which it rained down across her face as she moaned in pleasure. It was much more exciting for her to see Shining’s cock shooting out something other than urine!

For a brief moment they both just lied there panting, resting for a while after such a hectic session. Soon Twilight raised her head and turned to look at her wheezing brother.

"Huff... did you like it?" She asked smiling.
"Y-yeah..." Shining gasped for air, "I..."
"Well, we still got time!" Twilight proclaimed and turned around over her brother. Her horn started to sparkle and in seconds a magical aura was wrapping around Shining’s cock as she begun to clop him to make it hard again.
"Wha-? Twily!" Shining was once again surprised, he hadn’t ever thought his sister was such a nymphomanic!

"Shut up and rut me, you big pervert!" Twilight commanded with a crazy smile and rammed herself onto Shining’s stallionhood, burying it as deep in her pussy as she could.

”Gha-haaaaah!!!” They both moaned in unison as Twilight jerked up and down Shining’s penis, slamming it deep into her cervix. Her pussy streched a little along her motions and she felt like Shining’s hefty equipment was tearing her in half, in a good way. To add in her enjoyment, she started using her magic to rub her clit while her brother’s meaty spear penetrated her.

”Aaahhh… Nghh! Fucking fuck yeah, Shining!!” Twilight blurted out as Shining’s cock slammed against the opening of her womb, seemingly enjoying the ride much more than her brother who had a hard time keeping up with her pace.

”Ah! Ah! Uh, Twilyyyyh!” Shining panted as her sister milked his penis. ”I-I can’t hold much longer! Gonna..”
”DO IT! Do it inside!” Twilight moaned and didn’t care, she was in a hurry to reach her orgasm before the spell was broken, ”Fill me up like a good slut!”
”N-No!” Shining protested between his teeth at first, ”You’re my sister! I- OH SWEET CELESTIA!!”

He grabbed Twilight’s rump between his hooves and rammed his cock deep into her one last time, making it pop past her cervix and slam against the back of her womb. It started shooting cum into it in high pressure.
”I’m… SORRYYYYYYH!!!” he shouted as he melted inside his dear little sister’s love canal, his pulsating member filling her womb to the brim.

Twilight could feel her belly expand as Shining’s hot semen spilled out from her folds, having filled her with his love. This was too much for her and she screamed her brother’s name when she came, her tight pussy clamping around Shining’s cock. She let go of her clit, keeping her horn glowing as it shot little fireworks all around. She was in heaven and didn’t want such a blissful moment ever to stop!

It was only then when Twilight subconsciously shot a magical laser beam out of her horn, hitting the sink with it and shattering it completely. The wall behind it was partially destroyed by the blast and a cold water pipe broke up along with it, spraying cold water on orgasming Twilight and her dumbfounded brother.

”Whaaa-! Goddammit, Twilight!” Shining shrieked as he got his share of water in his face. ”Sorry sorry sorry! This wasn’t supposed to happen!” Twilight shouted back and tried to repair the leak with her magic. It was Shining who had originally broken the sink, not her. It was like it was destined to happen anyway!

”Kids! Are you alright in there?!” They suddenly heard their father’s voice coming behind the door, "Why are you screaming there?"
”Oh shit!” Twilight hadn’t remembered their parents were still home and now they were pounding at it trying to get in!

”Huh, they were home?! TWILIGHT!!” Shining yelled at his sister in shock, while Twilight desperately tried to fix the destruction, still sitting on her brother's lap with his cock buried in her. She knew very well she couldn't possibly come up with a good enough explanation to all of this. This was way too much stress for the princess of friendship!

”Oh no, I didn’t lock the door!” Shining realized and tried to rise up, making Twilight fall backwards and slip from his cock, making it bend in a way it made Shining yelp in pain. As she crashed on her back on the floor, they saw the bathroom door opening, revealing their shocked parents standing behind it.
”It’s all over…” Twilight closed her eyes in shame, knowing this was going to be the most embarrassing moment of her life…

But at that moment she noticed something: the crystal had already shattered, meaning her time in the illusion was already up, luckily. Just like 30 minutes ago, purple magical smoke started engulfing everything inside of it, sparkles striking all over. Twilight saw how everything around her dissipated; the room, all the furnitures, her parents and brother… Bright light flashed before her eyes, so bright it was almost blinding. Everything went white!

***

Twilight found herself standing in the same place she had left half and hour ago. Her old home’s bathroom was now gone and she was surrounded by the shelves of the archive. Twilight tried to brush her mane, finding it was no longer wet, as if nothing had happened. She touched her marehood, feeling her brother’s seed being completely drained from it, then turning towards the clock to see that 30 minutes had passed. It was as if she had woken up from a nightmare, the spell had worked exactly like the scroll had been describing.

”Well… That fun didn’t last long!” Twilight sighed in disappointment and shrugged, but also she was reliefed for not getting into any trouble. After all, she had fulfilled one of her deepest sexual fantasies and it had been totally worth it. ”Thanks, Shining…”

”Well, Twilight! Did you enjoy your time in the… Past, should I say?”
Twilight jumped when she heard a familiar voice behind her. She turned her head towards the voice, staring right in the eyes of her mentor, Princess Celestia. She had sneaked behind her and smiled gently at her student, ”Not all of my students get such privileges!”

”Um… Y-yes… I did!” Twilight replied nervously and scratched her neck, ”I found what I was looking for. Thank you so much for letting me do this, Princess Celestia!”

”Hmm-hmm, you’re welcome, Twilight!” Celestia nodded, ”But I’m also grateful to you.”
”You are?” Twilight was confused, ”What for?”

She suddenly noticed her mentor had blush on her cheeks, as if she had seen something arousing.

Wait! Arousing?

”Wait, you couldn’t possibly…” Twilight stammered, not understanding what was going on.
”Well, my dear student…” Celestia begun to answer, ”That spell doesn’t exactly make its caster go back in time or make them experience the event of choice on their own, like a normal memory spell would do. It actually RECREATES that event within the area the spell is cast."

She chuckled for brief moment and continued, "Such is its drawback: the caster would experience the event as if it happened to them normally, but those outside the area of effect…”

Twilight started sweating, blush forming on her cheeks. ”So… W-what You’re saying is…!”

”That’s right!” Celestia smirked and swished her tail aside, revealing a strand of fresh pussy juice that hung from it, ”Those who are outside the area can also witness the memory, like watching a movie! And what an interesting movie it was!”

That was enough for Twilight. She groaned in embarrassment, burying her face in her hooves. Her most darkest secret had been revealed! She now felt completely exposed before her beloved teacher, who lowered her hoof on her shoulder to reassure her. She may had escaped from one embarrassing moment of her life, but not this one, THIS might have been the most embarrassing moment in her recent memory!

”Awww, don’t be embarrassed, my dear student! Even I have some weird fantasies I would rather never share with anyone. I would CERTAINLY lend you another crystal sometimes!”

She leaned closer to her blushing student and whispered in her ear, ”Because you know, you have a very… VERY interesting past!”

-THE END-

Author's Note

So this a sequel to one of my first fics I published here. I was told Twilight could have been more teasing towards her brother in it and I also thought it felt a little unfinished, so instead of rewriting it I decided to make it a sequel.

I tried to focus more on a story than fetish porn this time, without completely abandoning it, tho - and it turned even more graphic than last time! Couldn't help it, Shining's just such a hot hunk to play around with.

I hope you enjoyed this small fic of mine, see you next time!