"I... could not sleep... I was wondering if I could sleep with you?"
Luna's cyan eyes greet you from the doorway, bleary and half-closed.
The blue alicorn leans tiredly against the masterwork oaken door that leads to your private quarters.
Her usual free-flowing, cosmic mane is frazzled, scruffs of hair jutting off into ruffled points.
Despite her worn-out stance she clasps a large amethyst tinted pillow and thin blanket to her wither using her loose foreleg.
A soft sigh escapes your throat.
"Princess, you know it's my day off-"
Those large quartz eyes open wide, collecting moisture at their edges and turning bleary.
You hate it when she does this, mainly because you know how well it works.
"Luna please, it's your turn tomorrow. You just need to sleep in your own room tonight and you'll have me for the whole week."
Luna's eyes water more as she lets out small saddened sniffles.
"B- but Anonymous dearest please, We hath gone without your gentle caress for the entirety of this month's first quarter."
The blue alicorn drops her head to stare at the ground; her face ignites into a tender blush.
"And... we had a bad dream..."
Lifting your head to face her you give her a deadpan stare.
"The princess of dreams had a nightmare?"
Expecting her to give up on her faulty bargaining when you caught her mistake, you give an accomplished smile...
It fades into a concerned gaze as you notice Luna doesn't stop looking so embarrassed. Instead her blush only deepens as she tries to hide her face.
Luna's eyes actually start to water for real, letting a thin tear crawl its way down her muzzle.
Pulling aside your bed covers to the side, you jog quickly to the dark blue pony leaning in your doorway, wrapping her in a tight hug when you arrive.
Stroking her ethereal mane with soft, long strokes calms her as you hold her close to your body.
"We apologise Anonymous. We should not have bothered thee on thine Sabbath. It was far beyond rude of - ah..."
Luna squeaks as you pick her up, keeping her barrel held to your chest you can look her in the face as you walk carefully back to the bed.
The look of surprise on the adorable moon princess' face quickly changes to embarrassment once more when she finally realises what you're doing.
"Anon it is fine we assure thou-"
You cut Luna off with an open mouth kiss, taking advantage of her defenceless position to intrude into her mouth with your tongue.
Luna flinches as you do this, but quickly draws her own tongue out to meet yours.
Pulling away when you feel her flat tongue start to advance leaves Luna's head pulling forward in an attempt to desperately catch your own oral invader.
The nocturnal equine fails in her attempts to maintain the kiss as you let her down lightly onto your bed.
Turning around, you walk to the door and close with it soft click, letting the morning light shining in from the hallway fade and leave the room shrouded in a sleepy darkness.
Making your way back over to the bed reveals a rather pouty Luna.
"You are lucky we are tired, dearest Anonymous. Else we would endeavour to punish your criminal actions to the fullest extent of equestrian law."
You tilt your head at the blushing lunar princess, giving her a goading grin.
"Criminal actions?"
Climbing onto the bed you grab the covers, ready to throw them over both yourself and the night monarch when she decides to lay down herself.
"Quite, dearest apprentice. Leading a princess on in such a way could be seen as tantamount to treason."
Luna sets her fluffy, amethyst pillow on the left side of the grand bed. Its comfort is obviously unmatched by any regular bed, all of the furniture in the castle is.
However, you know full well your king sized bedspread wouldn't stand much of a chance against the ethereal touch of the diarchs own.
You would complain that you never get to use your private quarters more often if both princesses' chambers weren't so amazingly combatable and decorated.
Putting on your best mock pleading voice, you address your ruler as sarcastically as possible.
"Treason? I had no idea my princess. Please, I know you are the cold hearted goddess of the stars, but could you spare just some small mercy for a poor fool like me?"
Noting that Luna had fluffed her pillow you attempt to pull the blanket over both of you, but are surprised when it doesn't budge.
"Hmmm, we suppose we could forgive this grievous infraction... on one very serious condition."
Looking down you notice the blanket has been enveloped in the soft blue glow of Luna's magic.
In a quick moment you are dragged over to the other side of the bed. Luna turns around and uses her magic to push you right against the rear of her barrel.
"Thou must act as the big spoon for the entirety of our slumber."
Pulling the blanker over both of you with her magic, Luna now wears a self-satisfied grin on her muzzle.
Giving a soft chuckle yourself, you wrap your arms around the smug little alicorn.
"The 'Princess of the Night', little spoon? What would your subjects think if they saw you being manhandled by some alien brute? Do you not worry for your image your Majesty?"
Luna giggles adorably in her dulcet voice, the tired tinge fighting her usually regal tone.
Rolling over and on top of you, the azure blue alicorn plants her hooves beside your shoulders, staring down at you with a contented smile.
Soft, silky stands of scruffy hair cascade down from her mane, her angelic face peaks through the gaps.
"Our subjects know full well your duties, dear consort."
Being this close makes the sweet scent drifting from Luna's hair more obvious... orchids.
Should have known the lunar princess would pick a night flower as shampoo.
Celestia uses a lilac infused blend, finely mixed in foreign lands. You would know, you do her mane and facial Tuesdays.
"Besides..."
Luna lowers her muzzle closer you your face, the loose strands of hair hanging from her mane tickling your cheeks.
"We are most certain our little ponies hold no uncertainty who here is truly the 'Big spoon'."
Her hot breath brushes your face, warming your cheeks and causing you to let out an anxious gulp.
Maybe you teased her a bit too much? She doesn't look as tired as you originally thought and this bed's starting to feel pretty heated.
"U- uh Luna, it's almost 10 and we're both on the night shift this week..."
Luna smiles deviously down at you, she always wears a confident expression in the bedroom.
Not that she doesn't always take things in her stride; it's one of the things you love so much about her.
"We have been without our apprentice and dearest lover for over a week. Surely you would not mind attending to your duties a day early this week?"
Luna's traps your leg between her thighs as she slides down onto your body, hugging you tightly and brushing her delicate slit against you.
A tightness forms in your underwear as the lunar goddess grinds steadily on your leg. You feel your body start to heat up to match your lover.
Suddenly Luna stops moving altogether, staring at you with an indiscernible expression.
"But... thou art right Anonymous."
Lifting herself up, Luna turns her head away and drops it shamefully. Her voice is uncertain and mournful.
"We... I apologise. I understand you must have had a long and difficult week with my sister..."
Luna stops in thought for a moment before continuing.
"I even get to enjoy more time with thee than my when it comes to my turn too. Spending the day taking thee on adventures of the old world, spending the evening in thine gentle embrace... and spending the night exploring the immeasurable expanse of the sleeping world with thee."
Luna's eyes start to water once more, now no longer in mock sadness.
Lifting her head, Luna stares into your eyes, her quartz irises shimmer in the wetness that encompasses them.
"And yet still I am as disgracefully selfish as to disrupt you in the small grace period you take so very rarely..."
Lifting yourself up, you reach out to your lunar lover, however she pulls away quickly, intent on leaving you to your own company.
"I apologise from the bottom of my heart Anonymous."
You bolt forward, grabbing the deep blue mare before she can escape into the night. Holding her tightly in your hands you take the opportunity to turn her to face you.
Her once bright crystal eyes are damp with tears and she refuses to lift her head to look at you.
Like this she looks so very vulnerable... not the imposing lunar ruler most ponies know her as, but a loving mare who just wants what is best for those around her.
When Celestia asked you to act as royal consort to not only her, but her sister too, you were uncertain to say the least.
Only after months of companionship and agreeing to apprentice under Luna did you even understand what Celestia truly wanted you to achieve all along.
You already know what you have to do and by life or by death you will do it.
"Anon, I-" 
Holding onto the back of Luna's head, you lean forwards and gently press your lips to hers, cutting her off.
You make a determined effort to explore as much of your lovers mouth as possible, letting your tongue run across the firm roof oh her mouth and the soft embrace of her own oral muscle.
Luna jolts in surprise at your actions, but fails to suppress a moan as your hands make gentle circle motions on her back and you tongue attacks her own with unfretted aggression.
Running your hands up Luna's back with practiced motions you eventually arrive at the base of her wing.
Thanks to the masseuse training Celestia requested- and the many months of practice you now have, you have full knowledge of exactly where to stimulate.
Stroking the pit of Luna's wing sends an immediate jolt throughout her body, her wings flair out in a breathtaking sceptical, sending a stray blue feather drifting to the bed.
The increased stimulation has an immediate effect on Luna too. Unable to keep herself restrained she begins to return your oral ministrations, hugging your tongue with her own and pulling it into an impromptu grappling contest.
Luna's eyes close in blissful pleasure as you work your hands up her wings, stroking and massaging as you go.
A ponies wings are far larger than a typical avian with a fair bit more muscle too, meaning they are easily stimulated to great effect.
If you needed any indication of how turned on she was, the moans coming from Luna that grow louder and more passionate with every brush of your hand are a good indication.
Not to mention the sweet scent that begins to fill the room, a potent mix of deific pony pheromones and Luna's own natural arousal swirl to form a uncontrollably erotic aroma that strains your poor boxers and will no doubt stain them if you don't release your own pent up arousal soon.
Taking advantage of her helpless state you roll her over onto her back while continuing to hold her tight.
Pulling away causes her to subconsciously follow your mouth, raising her head in an attempt to continue wrestling your tongue.
As you finally separate Luna opens her shiny quartz eyes to stare up at you.
You now mimic her dominant pose from earlier, hands holding you over her as you stare at each other in barely contained lust.
Seeing her like this... cheeks stained in a deep crimson, open mouth breathing heavily in both untold arousal and anticipation... it makes you far more turned on than you thought it could.
Now you realise why she likes being on top so much.
Giving your love a gentle smile only causes her to turn her head to the side bashfully.
"You really down understand, even after all this time, do you Luna?"
Luna turns to face you with a confused look, her words come out stumbled, her tone unnerved.
"What... what do you mean?"
Leaning down, you hover your head just an inch from her own and speak in soft syllables.
"If you really need help, you know you can always ask me, right?"
Luna stares up at you unsure.
"Yet... you appeared so disappointed earlier?"
Stifling a chuckle you answer her truthfully.
"I was tired Luna... still kinda am. I know exactly what you want at the start of our week, I just wasn't sure I'd have the energy to give you it."
The trapped pony "harumph"s at the accusation, shyly turning her head to the side.
"I erm- We hath not the slightest inclination of what thou are suggesting dear apprentice. We merely required our most trusted subject act as a sleeping aide."
Honestly you find it difficult not to laugh at her sudden shift in tone.
"Good attempt princess but we don't need to act coy any longer, it's already decided remember?"
Technically you could use this as an opportunity to ditch and get some proper sleep, switching sleep cycles on a weekly basis is rather demanding.
...
But what type of consort would that make you?
"Because tonight, I'm big spoon."
Grabbing Luna by the sides you hold her in place as you take advantage of her vulnerable mouth.
"A- anon wha-"
Striking fast, you meet her mouth with your own, sending your oral invader on a forward assault.
 This time you will not be outmanoeuvred by her pony tongue, you just need to attack in intervals.
As soon as Luna moves her own tongue to meet in combat you pull away, sliding your left hand from her side down to her crotch.
Looking down you notice your target, two decently sized mounds lie comfortably between Luna's twitching thighs.
Luna's royal breasts were covered in a thin layer of darker blue fur, the darker color leading further down her lower body and onto her crotch as well, although you don't have a great view from this angle.
Feeling your hands over the mounds causes a slight hitch in Luna's breathing. Feeling a small, hard nub on the face of the left breast forces an evil smile onto your face.
"...Anon? N- no wait- Ah- AHHHH"
Luna squeals as you pinch her dark blue nipple, not hard enough to be painful, but enough to cause her to flinch.
Taking the opportunity in hand you move to kiss her once more, taking advantage of her surprise to batter her tongue with your own saliva.
Moving your right hand to meet your left, you use both to massage her pony mammeries vigorously.
Luna moans into your mouth at your dual ministrations.
Noticing her legs squirming, you pull away to give her respite.
Breathing heavier than usual Luna speaks quickly.
"Suns, Anon! We were under the impression thou would be exhausted after a daunting week, where did thou find the vigour for this?"
"You and Celestia put me through a good workout Moons."
Luna blush intensifies at your pet name for her but can't help her smile as a stroke of playfulness enters her voice.
"Thou lewd knave, what art thou implying?"
Lifting your hand from her soft breast to stroke her muzzle lightly, you answer solemnly.
"I'm implying you've had a long week and may be slightly sexually frustrated. What I'm suggesting is that you relax, lay back, and let me tend the moon tonight."
You follow up your words with a quick kiss, trailing more kisses down her face and neck, making your way down her warm body.
Luna giggles at your ticklish kisses before answering.
"As you wish Anonymous. And know that I will pay you back trice as we slumber."
Continuing your decent down your lovers body-