Double-Shift
You glance at the door over and over again. You know it's still only evening because of the orange rays cascading the hallway in front of you, but you're just too excited! You're protecting Celestia's chambers once again, and she even personally requested you this time! While others may be under the assumption that you've been giddy because you had the honor of guarding both princesses in one night, you're actually waiting for a "gift" that Celestia had promised you, and an "idea" that Luna wants to put into play for said gift.
When your commander got the order for you, he let you take the rest of the day off until sunset. He wasn't going to have you defending the rulers of the land without any rest.
You like your commander. He's nice.
Well, here it is: the setting sun. Night will be here soon, and the princess of the sun will bring you into her chambers for your reward.
You take a deep breath to calm yourself down. You've had sex with both princesses of Equestria in the last twenty-four hours; one of them has a surprise in-store, and the other offered to repay you by the coming of morning.
You smile and lean against the back wall, balancing your spear on your shoulder and chuckling. Coming of morning. You think back to last night, and how you'd entered both kinds of Celestia's chambers.
Your dick begins to twitch as you think. What will she do this time?
"Fancy meeting you here." You launch yourself from the wall, propelling your spear down the hallway.
You strike your salute to Princess Luna, who has approached you from the lengthy corridor. You'd missed her while you were lost in thought, but you have to recover quickly, "Good evening, Ma'am!"
The mare smirks at you and raises an eyebrow inquisitively, "Are you gonna be spacing out every time you're on guard?"
You try to say something clever to make her like you more, despite the fact that you know you're totally getting laid anyway, "Only when I'm thinking about you, Princess."
She giggles and rolls her eyes, "Oh, look at you being the smooth talker." She opens the door and waltzes into Celestia's room, blatantly pronouncing her hindquarters as she does so, "Wait right here; I have to have a word with my sister." The door closes behind her.
You wait for a moment, thinking to yourself, then you move to recover your spear. What could Luna be talking to Celestia about? Techniques? Experiments?
A thought pops in your head, and you grin as you think of it. How about a threesome? You pick up your spear and shake your head. It's unlikely, but damn that would be great.
As you return to your post, Luna opens the door. She's without her regalia, and smirking at you deviously, "Come on in," she says before stepping back inside.
You follow behind her, watching as she strafes her rear from side-to-side. Oh, you'll come on and in if you get the chance.
The room is the same as last you left it: the pink walls, the bed big enough for two Celestias, and (your personal favorite) the pillow by the fireplace. Princess Celestia sits in the same place she did when you began this whole thing: watching the fire happily while she rests on her oversized pillow. You see the stains you'd left under her are all but gone, and her own regalia sits off to the side.
You're getting a little too excited, glancing between the two alicorns; both have their own sets of features, their own types of sex. Celestia likes to take it all in and savor the moment, but Luna wants as much as soon as possible.
You're getting harder just thinking about your times with them. These girls know what they want, and they know you can give it to them.
Luna leans against the foot of Celestia's bed, looking over her shoulder to watch you. You cease your perverted glances immediately in order to appear more professional. The lunar mare begins speaking without breaking eye-contact, "Well, sister of mine: now that I've got you up to date with recent events," you swallow loudly and shuffle uncomfortably; she told Celestia about your second incident with royalty last night, "don't you think our knight in shining armor deserves better compensation for his 'services'?"
Celestia looks over her own shoulder, clearly embarrassed about her sister being aware of her sexual activities. She makes eye-contact with you and glances away. She clears her throat and replies heartily, staring at the ground, "Yes I do, sister."
"Then by all means," Luna's horn glows, and your armor gently falls to the floor, piece-by-piece as she undresses you, "let's get started, shall we?" The mare walks around the far side of the bed, "Tia, would you kindly help me set the mood by clearing the sky?"
The princess of the sun stands up and faces your general direction, and you glance outside to watch the sun leave the sky before looking back to the largest mare in the room. Celestia is just as elegant as last night -- her glowing eyes, her well-toned figure -- everything about her seems to glow like another sun. You may find Luna's form more desirable, but Celestia has a presence to her that will forever remain unmatched.
You feel your hooves leave the ground as Luna pulls you toward the bed, just as she'd done the night before. However, this time, instead of placing you on top of her, she lays you face-up. You try to roll onto your side, as you feel awkward with your twitching penis exposed for all to see, but Luna plants a hoof on your shoulder and pushes you back into position. "Just relax," she says softly, still smirking. You do as you're told, ignoring every part of you that says to hide your junk.
Celestia steps to Luna's side, looking you in the eyes. While you want to switch your gaze between Luna's and Celestia's, you can only settle yours in the eldest sister's. Something about them is far more entrancing than the other's.
Luna trots to the foot of the bed again and climbs aboard, sitting just at the edge of your hind legs, with her own hind facing you. You manage to break your gaze from Celestia to watch Luna raise her flank, exposing her plump and prepared pussy. She looks under her belly to observe your cock as it slowly rises to the occasion. "Glad you like what you see," she laughs, then slowly envelopes your extension in her tightly-walled vulva.
You sigh and watch as she lowers and raises herself on your penetrator. Up, down, up, down... You can tell that she's enjoying it by her giggles and moans.
Celestia sets your head down onto the bed and looks you in the eyes once more, and suddenly your attention shifts from your lower half. "Relax," her voice is beyond beautiful, and her eyes burn holes into your soul. As much as you like what Luna's doing to you, you would much rather have this one riding you. You reach your hoof behind the mare's neck and pull her down onto your mouth, and your tongues enter the other's territory. The battle begins, with yours gaining the first strike, but quickly being counter-attacked by the alicorn's sizable and more aggressive muscle. You know from the start that this battle will not end until the superior fighter permits it to, but that doesn't mean you're not going down without a fight!
Luna's bounces are getting progressively faster and harder, but your focus isn't entirely directed there. Despite the guarantee of losing the war, you aim to win at least a few battles in the mouth of the opposing force. You can't defend against an invading tongue and invade a mare's clit at the same time, so your attention is divided.
"Oh!" Luna slows her barrage as her cum washes over your solid dick. Sensing her sister's climax, Celestia removes her mouth from yours and steps back, allowing you to return your attention to the mare who thought she had it the whole time. The princess of the night lifts herself off of you and breathes heavily, dripping all over the sheets. Having been relaxed by the larger of the siblings, your adrenaline remains as low as it possibly could be when around the two mares of your dreams, so Luna is relatively phased by your unimpressed manner. However, she got what she wanted, and that's what matters to her most. She speaks between breaths, "Well... sister... your turn... if you will..."
Celestia blushes and stares at your erect penis, looking at it as though using it would be suddenly sinful, "I... I don't know, I think he's gotten quite enough from you-"
"He hasn't even cum yet!" Luna defends you, pointing to your unfinished business with a hoof, "Don't you want to show your appreciation for what he's done?"
The larger mare glances at your face, then agrees wholeheartedly, swapping places with her sister. While Luna rests her head next to yours while she takes whatever break she can get, Celestia climbs onto the bed and steels herself for engagement. She looks over her shoulder at you, and you flashback to the first time you'd entered her. She had this same look: thankful for you giving her what she needs, and itching to get filled. She lowers herself.
Celestia feels so much better compared to Luna. Her voluptuous cunt has a warmth to it that makes your cock feel like it's on a beach getting a tan, while also wearing the coziest silk blanket of all eternity. It's almost as if her vagina knows exactly what you want her to feel like.
Unlike Luna, she doesn't just hop up and down either. She takes in as much of you as possible, then swirls your dick around inside of her like a cotton candy machine. One swirl, two swirls, exit, enter, one swirl, two swirls, three swirls, exit... She keeps mixing it up, and you try to find a pattern despite there not being any.
Luna, far more aggressive that her sister, firmly plants her lips on your and pushes you back onto the bed. While you would do as you did with Celestia's mouth (though, with greater success), the elder's other lips are far too engaging for you to focus on your mouth movements again.
Up, down, round and round. Up, down, up, down, round and round and round.
Before any of you can really get into the moment, your balls clench and a wave blasts forth into Celestia's pussy, once again lining her walls with your milk.
Celestia looks over her shoulder, surprised, and Luna gives up on you when she notices that you've stopped moving your mouth altogether. Your hefty breaths come out loudly, and sweat is dripping from every pore. Not just because you were really feeling it, but because you're nervous. How could you have came that early?! The mare you wanted to please the most is now the least pleased!
The princess of the sun removes herself from you, disappointed and clearly avoiding eye-contact. Her vagina only drips your cum.
Luna frowned, "Oh. Sorry, I might have had him a little more than half-finished."
Celestia awkwardly shakes her head, still unused to the whole "threesome" situation, "It's fine. The point was to finish him, right?"
The sister approaches her sibling and consoles her, "Yes, but we can't just leave you like this, can we?" The lunar princess glances at you, then gasps, "I have an idea that can benefit all of us." Celestia seems almost too excited for a plan that will let her climax, and she realizes it, quickly faking back into a depressed position. Luna giggles at her sister then continues, "Since he's clearly too worn out to finish you off himself," you shrink up in humiliation, "I'll just have to do it for him!"
You and Celestia both look at her with utter confusion. Luna laughs audibly and keeps talking, "I mean, what if he needs us, but we're not available to help him out at the moment? He'll need something to help him work the kink out," her horn glows and she once again carries you with her magic, pulling Celestia's fireplace pillow closer to the bed and placing you on it, "and what else turns a stallion on more than watching two mares go at it?" She pushes her sister onto the bed with the larger one's rear facing the smaller mare's face. Celestia is obviously emotionally confused, and Luna brings her face close to her sister's pussy. She studies the orifice closely, grinning as though she's trying to seduce it.
She brings her nose up to touch the clitoris, and Celestia immediately perks up out of surprise. Luna laughs, "You're all wet and only half-done, sister," she slides her nose down the vagina, getting the tip of her muzzle slightly slimy, "if that stallion over there can't do his job, I guess I'll just have to finish for him!" Luna closes her eyes and buries her muzzle into her sister's cunt, then begins sucking.
The sun goddess initially lets out a hesitant moan of satisfaction, but slowly begins to let herself enjoy the feeling.
Mentally, you're recording this whole scene. Whether you actually need this memory or not, it' something to behold: the princess of the night eating out the princess of the day, who also happens to be her sister. It's history in the making, and you're part of it.
Luna retracts herself from her sibling with her tongue lingering inside for a few seconds before pulling out fully and changing her tactic. She tilts her head forward and slides her horn right into the open slit. Celestia lets out a loud gasp and starts breathing audibly as Luna begins using her horn as a makeshift dildo, moving in and out as fast as her horn could move, and occasionally spreading the chamber out to allow herself easier entry.
If you could cum again, you probably would, even without using your hooves for aid.
Luna removes her horn from the place of action, then extends her tongue as much as she can before running it up her sister's pussy like a popsicle. A really hot, wet, popsicle. She licks again, and again, and again, before once again returning to eating the vulva and rubbing the clit with her nose.
Celestia can't hold back any more, releasing her valves and dropping to her mattress. Luna remains inside, viciously lapping at the inside as cum spits onto her face and mane. After a few moments of trying to steal every drop of cum from the other mare's cunt, Luna finally steps back onto the floor and licks her own lips, "There. Finished."
The bigger princess smiles and speaks through her sheets, "Thank you, Luna. I needed that."
Luna smiles confidently, proud of a job well-done. She turns to you, "Did you enjoy the show, pretty-boy?" You nod and clop your hooves together in acknowledgement. Luna laughs, "Damn right. Now," she attempts to wipe some of the liquids off of her face with her hoof, "while my sister sleeps, you'd better get out in that hallway and protect her."
You retrieve your gear and bow, "Of course, your highness."
As you grab your spear and straighten your helmet, Luna speaks once again, tapping her now-sleeping sister on the shoulder, "And by the way: we both thank you, and we will call upon you again should the need arise."
Catchphrase! "Any time, your majesties." Fuck yeah.
Luna laughs at your slogan and shakes a hoof for you to leave. You step out into the cold, damp hallway. Last night, you pulled a double-shift. Tonight, you pulled a different kind of double-shift.