Shining knew that keeping on the move would increase Twilights chances of finding him, lots of long hallways in this castle after all, so he knew it would be best to stay put.

Tucked into a closet, still naked except for a blanket almost the same color as the castle walls and floor, he listened. Breath slow so as not to alert the sensitive ears of his heat addled sister. She'd find him in a nanosecond if he started hyperventilating like his instincts were telling him to.

It wasn't long before he heard the soft footfalls of his sister padding down the hallway and into the room his erstwhile safe spot was attached too.

"Shiiiinyyyy! Where are you my dear, loving brother? I just want to talk, you can come out."

He'd be more inclined to believe it if he couldn't still hear that rictus grin in her voice. He knew if he so much as breathed too hard he was going to get fucked until a permanent imprint if his ass was put into the crystal of the floor.

He'd faced down manticores, hydras, cragodiles, changling queens, and the spectre of an ancient psychotic king obsessed with crystals. What was it with crazy ponies and crystals anyway? First Sombra and now Twilight....well she was neurotic but the point remains. The point is nothing had scared him more than his little sister up to that point.

Celestia was a HUGE tease but she played the long game and was willing to chase him, in whatever fashion, until she wore him out. Luna was a hunter however, tracking him, laying traps like her little stunt in their marriage bed. She was relentless.

Twilight... Twilight was a genius tactician. She knew every weak point he had, how he'd react to certain...stimuli. it's not like this was the first time he'd had to hide from his magical prodigy of a sister when her heat got the better of her. Just the first time since she got wings.

As these thoughts ran a marathon around his skull he realized that while he'd heard Twily enter the bedroom he hadn't heard anything since...including her leaving. He was now faced with a choice, chance a peek from his makeshift blanket fort, or stay put.

Screw it! I'm the Former Captain of the Royal Guard! As he slowly moved the blanket just enough to peek an eye out he was petrified to see Twilight's smile so close it took up every bit of his vision. Close enough to smell the sweet cream and coffee she drank so much of.

"Foooouuund yooouuu!" She half sang as she snatched his blanket fort from his naked body. Smiling wide enough to make Discord proud she threw the blanket back onto the bed.

why did I think it was a good idea to hide in a room with bed? TIME FOR DRASTIC MEASURES! " N-now Twily, it's just the heat, you've fought through it before, you do it every year. Do you really want to break your perfect score? Do you really want to FAIL?" Best bet, play to insecurities, engage fear of failure and apply pressure. Go in for the final strike. "How disappointed Celestia would be."

With a wry look Twilight just giggled maniacally, "That sluts chasing you too, or did you forget? They're right outside, plotting on how to get through my defenses as we speak. All. To. Get. To. Your. Cock." This last was said as she stalked back into the closet and right up to my naked form. "I'd say rest easy big brother but rest implies relaxed and I want you HARD!" After a quick glance at my traitorously hard dick "oh goody! I'm already getting half of what I want!" Why did my dick decide now was the time to get scaroused? Oh...right..a month without cumming. DAMNIT!

With a small pulse of magic Shiny found himself being levitated to the bed and any chance of escape taken from him as his former protective cover was shredded into strips and used to tie him spread eagle to the head and footboards.

Twilight felt her already dripping nectar gain a new life as she restrained her brother. "Well, that's interesting, apparently I LIKE having you tied down, never knew I was into bondage" climbing onto the bed she lay down next to him, almost cuddling like they used to when she had a nightmare. "Confession time, I've wanted you like this for years. The only stallion I've ever been interested in was you. Always you, Shiny."

"Twily, you don't mean that. You could have anyone you wanted, you're pretty, smart, and a Princess for Faust's sake! Who wouldn't want you." Shiny said, struggling against his makeshift bondage gear.

"Ah, yes that old chestnut, ' you're a princess you could have anyone' no one ever thinks about me anymore just the damn crown and these damned wings! No one ever thinks about what I WANT. WHO I want....wait...what did you say?"

"That you don't want this?"

"After that, and you're wrong"

"You're smart??"

"Before that, and while that's true it's hardly relevant."

Wracking his brain for his exact wording he stammered out "Y-you're pretty?"

"You think I'm pretty?…"

"Well duh, I'm your brother but I'm still a stallion. You have amazing tits and an ass that you could bounce a bit off. It's tighter than the bed sheets in basic training and they ACTUALLY bounced bits off those." Shiny said incredulously. "Any stallion with half a brain could see that."

"Huh. Learn something new every day. I never knew you thought I was pretty." Shining noticed Twilight's hair starting to return to normal as she thought about this. SUCCESS! Maybe if I keep making her think I'll survive this without my pelvis looking like a piecasso painting

"Then to return the favor, why don't I teach you something. I'll show you how long I've wanted this" with her pointer finger glowing with the telltale white of a memory spell she touched it to his forehead and his vision went white

Great, I'm in Twilight's thoughts now. No telling what she's doing to my body... he was greeted with a vision of his little sister when she was about twelve chewing on a piece of toast, sipping on her first ever cup of Moon Tea, and studying away for her next test at Princess Celestia's school. Watching as a much younger version of himself walked through the door from his first day at basic training.

"I remember that day, Goddess I was a wreck. Three hours of running in full armor and that was day ONE! They certainly did not play around with the training. Luckily I lived in Canterlot and didn't have to stay in the barracks, the stench would have been incredible."

Unseen by his memory self he watched as the vision of him breezed by his little sister in a cloud of fumes to get a cooling glass of water only to be horrified as he watched her stifle a moan with a huge sip of her moon tea and shudder as his younger self walked past again ruffling the tiny nerds hair.

No sooner had his younger self said hi to their parents than he was unceremoniously teleported into the bathroom with a shout of SHOWER! His vision blurred as he followed his memory self into the bathroom. The shower hadn't been running thirty seconds when the door cracked open a couple of inches and a familiar purple aura stole his sweaty t shirt and vanished. "I wondered what happened to that! Drill sergeant chewed my flank off for losing it on day one. Cost me three bits and an extra hour of laps! Why in the world would Twily steal that?....nooooo it couldn't be!"

The scene shifted to another one 5 years later. The night he was promoted to Lieutenant. He remembered the speech given by his Drill Sergeant. "This stallions record is unimpeachable in all but one respect. Lieutenant, I checked, you have single handedly lost more military issue PT shirts than any ten guards combined. Can you please, after all these years, account for any of them?"

While his younger self gave a joking reply he watched his now barely eighteen years old sister blush bright enough to light up the corner their table was at. "She'll be leaving for Ponyville soon, maybe a year? Did she really steal them all? That would have to have been over a hundred shirts!"

More and more scenes flew through his memory of the years before she left for Ponyville, crawling in bed feigning having had a nightmare when all she wanted was to be close to him and do...things...while he slept like the dead next to her. He had always been a heavy sleeper.

The scenes that shocked him more than any others were the very Frank conversations that a young Twilight had with her favorite babysitter about a certain, hot, oblivious, brother of hers. A babysitter that he would later marry. The same one who put a pressure valve on his dick...wait. what the hell are they talking about?

"So if I become a Princess and he gets you pregnant... I'll be his legal wife and I'll finally be able to have him?! And no one can say anything about it!?" Twilight squealed happily.

"Wait a fucking second, Twilight's been planning this WITH CADENCE since she was a TEENAGER!!!" He squeezed his eyes shut to try and scrub that memory from his mind only to open them and find himself back in the room with a very naked and very aroused Twilight.

She smiled "You're very lucky, Shiny, most stallions would kill to have a wife as sexually adventurous as yours. You're lucky I only showed you what led to my fun, if I had shown you all of it I'd have wasted this amazing hard on...oh that's right! You can't get off unless it's inside one. Of. Us." Wrapping her hand around his dick and slowly stroking her hands lightly up it's length. "Let me help you BBBFF, let me have what I've wanted for over a decade now. You've been good long enough and so have I. You MUST have noticed something was off, no one's that oblivious"

Shuddering as she stroked his cock he stuttered out "N-nope, had no id-dea. I can't believe you stole all those shirts and I can't believe Cadance knew how you felt!"

"Princess of love, duh! She knew within the first night that what I felt for you was more than a sister should feel. Who do you think taught me the first 100? It wasn't Celestia, my studies with her were about diplomacy and Magic." She laughed lightly "Law wasn't on the schedule for years. Now, you have a choice BBBFF, continue to flaunt the law you swore to uphold or let me, your sister, love you the way I really have for years."

"So you knew what was going on the moment I got here didn't you" shiny gritted out, quickly losing his mental battle with his raging hard on.

"I suspected, I figured as soon as the Sisters started chasing you that you'd eventually end up here. I just had to bide my time and wait until the Ladybug spell took effect. Not knowing what was up with the law was an act, sorry about that."

"Ladybug spell? The pressure valve on my dick has a NAME?"

"Oh sure! What did you think that little dance was about? Ladybugs awake is code for 'I'm not pregnant yet' the Ladybug in question is actually an Alicorn magic signature, it will only be released when it registers that it's 'sleeping' in an Alicorns vagina."

"So I'm never going to cum again unless I actually follow this law with my heart and not just because it's the law am I? Unless I actually love all four of you, I'm stuck aren't I?" Laughing weakly as his hips began to buck against her hand.

"Yes, but you have to know, we all love you for different reasons. And we all do love you. Luna loves your dedication, not only to country but to Cadance and Flurry. The fact that you've fought this hard to remain loyal has only made her love you more. Celestia...she loves nerds, your goofy joking nature, the seriousness in which you took your duties to protect a literal Demigod as if it were a real life O&O session made her giggle regularly. That same love of nerds brought me into her bed when I turned 18 and asked her out on a date."

"You slept with Celestia?!? Oh Goddess that's hot!" Shiny said as his bulging cock leaked like a faucet at the things his little sister said

"Luna too after she returned. They've always shared lovers."

" Hahahahahahahaha!!!" Shiny cackled like the mad stallion he was certain he was becoming

"What's so funny!" Twilight asked tartly as she squeezed the base of his dick

"You, tucked between the Princesses of the Night and Day... you're NAME IS TWILIGHT!!!"

Shaking her head at the obvious pun "See? Nerd. Trust me, Shiny the irony of that has not been lost on anyone who actually knows we are lovers."

"Fine you mad mare, take away all my fun. Just don't stop jacking me off, I can feel my nuts churning and getting bigger. If I'm going to do this then I might as well do it right! Untie me, I'm done running little sister."

With a sound normally reserved for a certain pink party pony when given the chance to meet a new friend Twilight stripped the ties off his hands and feet and scooted down between his spread legs, burying her muzzle in the crease of his legs right by his bulging sack she inhaled deeply shuddering at the potent pheromones wafting from his groin.

"I've waited ten years to do this Shiny, I'm going to have my fun first!"

Author's Note

Exposition heavy chapter, sorry about that but given a few of the comments I figured I'd better get this out of the way sooner rather than later.

For those who are clever enough to pick up the hints I dropped, HUSH! let it reveal slowly.