Luna was sitting at her large wooden desk, currently unrecognisable due to the large stacks of paperwork strung out before her. It had been five years since her return yet, Celestia had wasted no time in offloading her paperwork onto her younger sister, which, although she didn't mine the newfound trust given to her, was becoming a painstaking job.

However tonight only one stack of papers interested her, so much so that she had called for her sister to be alerted at once. As Luna skimmed through the report she was holding one more time, she bagan to hear the loud clop of hoofs on the stone floor, just before the large blue doors of Luna's study where flung open.

"Ok Luna, what is so important that a guard nearly got riped in half for waking me at this hour," said Celestia, a clear tone of annoyance within her voice.

"And a fine night to you too Tia," Luna said with a smile, "oh nothing to serious, only the untimely deaths of nearly twenty ponies,"

Needless to say Celestia was gobsmacked "what but, how?"

"The report goes like this," Luna brought the paper she was holding in front of her and began to read, "apparently a masked figure was seen sneaking in to a Prance fashion show, security was sent to investigate but when they didn't report back, backup arrived and the event organiser informed, when asked to stop the show she refused saying 'she worked too long and hard for it to be ruined now.'

"During the event the figure turned out to be a earth pony, appearing on stage he appeared to be wearing some kind of body covering, as his entire body and face was mat black. Apparently his target was that shows special guest, prince Blueblood, and after reliving our cousin of his head, which the attacker kept by the way, he then fought his way out of the event, leaving seven dead due to blood loss, four due to missing limbs, two decapitated and the rest died ether on ther way to or in hospital,"

As Luna finished she held the report out to Celestia, who quickly took it in her magic, after several minutes shared silence Celestia turned and headed for the door.

"Very well Luna, I see your point, I'll just take this and we can start a full investigation," she said only to have the door slam shut hitting her muzzle.

"Do not lie to me about this sister, this is not the first time something like this has happened," Luna said with an angry scowl, "and just when where you planning to investigate all these," she said flinging a stack of papers at her with her magic.

Looking over them Celestia saw they where all reports of killings all over Equestria, all with one thing in common.

"What is going on Celestia, why are you covering these up, what are you trying to hide," Luna said, close to tears at this point, before Celestia gave a defeated sigh and began.

"There's reason I'm hiding all this, for you see it is only natural for an aunt to want to help her nephew,"

Now it was Luna's turn to be gobsmacked "but, what, how?"

"Yes Luna the one behind all of this, all these deaths, is your son, Midnight."

As midnight sat in his vantage point, hidden deep with a large apple tree, he scanned the small town before him before spotting his target. Ponyville may have been a small town but, that never made him any less cautious whenever her did a job here, and now with the Addition of the new princess and the castle, it only made him even more on edge.

Giving one last look out over the sleeping town he checked his target, checked his gear and then set off, leaping out of his hiding place as silent as a shadow, quietly making his way across town. He knew the town layout quite well, he had been here many times before, so he knew the best way to his target, avoiding large light sources and any late night wonders.

"But, how did he, how can I, I can't have a son," Luna ranted, clearly distressed by the news, to find out you have a son and that he's a killer must have been eating her up inside.

"I had feared you might not remember," said Celestia pulling Luna into a hug, embracing her with her wings as she continued, "it happened many years after your banisment as Nightmare Moon, one night I heard crying coming from the moon and so, after arriving up there to investigate, I found out you had given birth to a beautiful little alicorn colt you had named Midnight. However, you asked me to bring him here to Equestria and hide him from you, possible out of fear of what Nightmare Moon would have done to him had he stayed."

"You mean me," said Luna, breaking free of her sister embrace, "don't talk like we where two different ponies, we where one and the same, I know this, I asked you to hide him from me out of fear of what I'd do to... To... My... Son," at this point Luna broke down crying again, allowing Celestia to bring her in close for another hug.

Holding her tightly, she lent down and asked her sister, "would you like me to tell you the rest?" Getting only a nod from her in response.

In no time Midnight had arrived at his target, standing at the base of the new Ponyville castle he began to scan the outer walls, looking for his way in. Standing just underneath the tallest window of the castle he started digging through his saddle bags quickly reteving his tools, pulling out a grappling hook, some rope and a set of claiming shoes.

After putting on the claiming shoes he stepped back and through the grappling hook, having it catch onto a section of the castle roof, leaving the rope to dangle beside the window. After giving the rope a quick strength test he wrapped it round himself and began to clime, using his boot coved hind legs to steady himself on the wall, he bean to pull himself up using the rope.

"After I teleported back from the moon, I quickly set to work," explained Celestia, still holding her sobbing sister in her fore legs, "I found a spell that alters the apperience of a pony making them appear as another race, so using that spell I turned Midnight from a alicorn to a earth pony and, just to be safe, I place a very powerful sealing spell on him, locking up his magic as well as the transformation spell.

"After that I placed him into the care of a family who where desperate to adopt a foal, I think leaving him on the doorstep was a bad idea but I did what I had to, but I alway kept an eye on him even from afar. Anyway after many years with them Midnight had accepted his life and was quite happy, that was until his adopted family where having a foal of their own and, during a heated argument, his adopted parents told him of how he came into their care.

"Shortly after that he disowned them, running away and joining up with the Canterlot royal guards, needless to say I was thrilled, I could keep my nephew close without him finding out who he was, but he was kicked out of guards traning some time later, he constantly fought with others and was not afraid to hurt others.

"After several near deaths, many covered up my myself regrettably, he was rejected from the guards, but not before turning his sights, and his sword, on several arrogant new recruits. After killing one and fatally wounding the others he became a criminal, quickly being hunted down by the guards but, at this point, he had already ran leaving no trace behind.

"It's was several years, and many search parties later, that I finally got one of these reports, he killed some noble in Saddle Arabia, quickly I sprang to action hoping to find him and bring him back, even if it was to a dungeon, but once again he vanished. After the first fifty years some ponies became worries, a killer who dousent seem to age, so I claimed the next killing on a new killer and laid the old cases to rest.

"I repeated this process over and over, claming a new killer was just coping old ones, yet everytime I saw a report, I felt a mix of hope and sorrow, wishing he would get caught so I could help him, but after nearly a thousand years I'd almost given up hoping," Celestia finally finished, drying her eyes as she looked down at Luna who after several last sobs had finally stopped crying.

"My son, my son's a killer but why? Why would he?" Luna pleaded, looking like she might cry again.

"Over the centuries I began to suspect he might have become a hit-pony,"

"A what?"

"A hit-pony, somepony who get money for killing others, I beleve a term for it you may know is assassin, possibly set up by some of the underground figures of Equestria,"

"My son, my son, why?"

Dangling from his safety line, Midnight gently tapped the window shutters, giving a small creek as they gently fell open, "open as always," he whispered to himself as he silently made his way into the castle. Stepping onto the hard wood floor he gently began to pack away his equipment, putting the climbing boots and grappling hook back into his saddle bags.

Leaving his bag by the window he proceeded into the room, with the moon as his only source of light he took off his mask to get a better look, there was his target, he stood beside a large four poster bed were a sleeping lavender alicorn lay. Silently drawing his sword, he held it tight in his teeth, raising it up high causing it to glint in the moon, causing the sleeping mare to stir.

Taking her to her chambers, Celestia gave her sister one last hug as they parted for the night.

"Get some sleep now Luna, we can start a search for him come morning, in fact, I'll send a message to Twilight asking her and her friends to help with our search," Celestia smiled as she let her sister sink into her room.

"I want... I want to help him Tia, I want... I want to be a mother," Luna wheezed exhausted, falling onto her bed, quickly falling into a restless sleep.

"I know sister, I know,"

A loud clang shattered the silence of the room, as Midnight's sword clashed with another, one held in the mouth of the lavender alicorn below him. Jumping back, midnight took up a defensive stance, clenching his jaw around the sword, locking it in place as Twilight lep out of bed, sword raised, heading straight at her attacker.

She swung and jabbed her sword at him, hoping to break his defence, but Midnight held his ground, deflecting every blow and countering when she left herself open, however she was quick to recover, leading to only a few minor cuts and bruises. The fight lasted several minutes before, moving swift as the night breeze, Midnight lunged forward catching Twilights sword with his own and forcing it into the ground.

Twilight stood there, shock frozen, staring at her attacker, quickly raising his sword, he pointed it at Twilights neck, closing her eyes she waited for what came next.

However as she heard the sound of metal clattering agains wood she slowly opened them, only to be met with the eyes of her attacker, after a short moment of just staring, the stalion in front of her moved closer and closer before he pressed his muzzle into hers pulling her into a passionate kiss.

After what seemed like a never ending make out session, Twilight finally broke free, smiling as she stared into the stallions vibrant turquoise eyes.

"Hello again, my midnight intruder," she giggled playfully.

"Hello to you, my lavender target," he replied, smiling at their little pet names for each other.

"So," said Twilight hopping up on the bed, "you've been gone a long time, tell me all about it,"

"Big job I had to pull in Prance," he said taking up his place on the bed next to Twilight, "one target, seventeen collateral, had to take out some big wig at a fashion show, prince Blue... Brain I don't know, never really kept track of royalty, bar you of corse,"

"Wait do you mean Blueblood, by Celestia, I should tell Rarity, after the way he treated her at the gala, I recon she be thrilled to hear about his untimely demise," she chuckled giddily.

"You know something, I never use to like the idea of what I did," planting another kiss on her lips, "until I met you,"

"Guess I just have a positive way of thinking when I'm with you,"

"And that's what I love about you."

Author's Note

Ok well I think that went pretty well but let me know if you think otherwise.

Hope y'all enjoy reading about more violent killing later.

For now just laugh at my attempts at romance.

P.s. Sorry no clop for you who saw the mature tag and got excited (literally). Keeping it semi-clean by gory.