(10 years later)

       Sunset Shimmer was with Twilight Sparkles as they looked through a range of scrolls abou portals and the like, the two young Alicorns were reading through the books and scrolls frantically to find something to help them to help them retake Canterlot from the Caribou invaders.

      Twilight's older brother, Captain Shining Armour was against the door, with about a dozen of Twilight's and Sunset's personal guard against the door. "Here, a creature of war..... Its a myth but hopefully it isn't friction " Sunset said.

     "Okay let's begin the summoning" Twilight said as the two began the ritual as the Caribou slammed on the door, try in to gain entrance.

      "I hope this works" Sunset said as Twilight nodded before a burning portal formed in front of them.

(Tartarus)

       Kevin was sitting in an old Cathedral, he was wearing demon steel plate armour on his chest and legs with chain mail underneath, his left arm was covered in tattoos which he received from defeating each keeper, he wore a black hooded leather coat that covered his arms and kept him warm in the frozen sections of the demonic world, around his waist was a belt which contained multiple gemstones, each containing raw magic which thanks to Kevin's evil blood, he could use. Sheathed on his back was a sword which the hilt was molded from the melted down horns of Tirak and Sombra when he encountered them in their domain, which disappointed Kevin as the two keepers were already weakened so he didn't get a fight. Slung around his shoulder was a satchel of infinite capacity, that he stole from the king of the Rats after he beheaded him, the satchel continue hundreds of magic items inside of it, on his belt was a skull attached to a chain, this Skull was named Sir Leonard the Second and was a Sin Eater, Leo was strangely enough, a human skull and loved cracking jokes about being a skull. Strapped to Kevin's back was a sword made of Nymph metal and star metal that he claimed from another keeper, he also had a multitude of throwing knifes and firebombs.

     To his side was Red, she was in her plated armour as she sipped her Sake, apparently her bottle contained an infinite supply due to a powerful enchantment from before she arrived, and that Red Oni can survive on the alcohol alone for centuries. Her 'club' as she pointed out to Kevin, after he made the mistake of call in it a Mace, belonged to her mother, who got it from hers and so one and it was similar to his Nymph and star metal sword.

       The three had been travelling together for what has felt like centuries, which thanks to the fact that you don't age in Tartarus, they looked the same as they did so long ago, they had shared many moments, like getting drunk, slaying monsters and rutting when they felt like it, which didn't phase Kevin in the slightest, as Red was pretty attractive.... when you get passed the fact that she is what, 9 foot tall and full muscle, with a bust twice the size of his head.

      Kevin leaned back as he reached into his satchel and willed a Wandering Mango before pulling out the orange fruit, which had five tentacles wiggling about trying to escape before Kevin used a knife to peel it. The fruit was the most readily available food source and did wonders as It not only herbivores but also carnivores, the species that enjoyed the fruit the most however was the Succuponies, except they didn't eat them.

       The two were relaxed in the Cathedral when the sound of electrical crackling caught their attention, allowing the Fruit to bite Kevin and run away squeaking "fucking little shit" he grumbled before looking to see a portal opening, he then looked to Red, who was now standing with her weapon drawn, she gave Kevin a nod as he pulled up his hood and cowl before they started approaching the vortex when they heard a voice call out.

      "Please, we need your help in defending our capital of Canterlot" the voice begged as the two looked at each other before entering the portal.

(Canterlot Archive)

      Twilight finished her message moments before two figures came through, one was a tall red ogre, which she recognized as a Red Oni, known for their fondness of Sake and compassion to friends, while the other was roughly 6 foot 5, hooded and armoured but the most disturbing thing was that it gave off a demonic presence and its red slitted eyes were unnerving, Sunset squeaked in shock, loosing her concentration and caused the portal to close, just as it did, the door burst open to show a large group of armoured Caribou. "Princesses, surrender now and you shall only be shared among our nobles" the commander said gaining the princesses' attention, moments before a knife impaled itself between his eyes and Twilight was gently shoved aside, same as Sunset as the two new figures approached the Caribou.

      "Demon!" One of the Caribou screamed out in fear as majority ran away in fear while the remaining held strong, moments before the Demon raised its hand, while its other hand moved to a crimson gem on its left hip, said gem began to glow before the Demon's right hand spewed blue flames like a dragons breath, incinerating the deer in a instant, but the most disturbing thing was, on its tattooed left arm was a arm band which was a cream colour, lightly splattered red from blood as it contained a bunch of cutie marks of ponies that she was friends with, Shining noticed this also and instantly dropped his sword and jaw in shock as the two figures left the room, the guards and princesses looked to the king of the Crystal Empire worried.

     "Brother? What's wrong?" Twilight asked as Shining was in complete shock, "Shining!" She shouted snapping him out if his shock, "what's wrong?" She asked again.

      "I just saw a ghost" he said before fainting.

       "Captain Storm Shield, please watch over my brother with your men while Sunset and myself see to this demon" Twilight said and before the guards could say anything, the two Princesses were out the door and after the Demon. Which they soon caught up to as it incinerated a large group of Caribou, who were attack a pair of maids, but what shocked the Alicorns was that he drew a Red vial from his satchel and gave it to the wounded mares, healing them.

      "Thank you" one said before looking up at his red eyes and started crawling backwards.

       "No worries, no hide somewhere safe" he ordered causing the two to nod and run away.

        "What kind of Demon not only heals a wounded pony but also lets her go?" Asked Sunset as she approached, ignoring Twilight's disapproval.

       "One that does not desire to murder the innocent" he said looking at the fire princess, causing her to freeze under his gaze. "Besides why have you followed me, it is dangerous for you both" he said.

       "We wanted to make sure you didn't hurt anypony" said Twilight as she warily approached.

       "Well if they threaten my homeland then they are forfeit" he said as he started walking with the Red Oni.

        "But they didn't threaten Tartarus" said Sunset making the Demon chuckle.

        "I'm not from Tartarus, I grew up here in Equestria" he said as they arrived at a large set of doors, which led to the throne room. "Red in 3 minutes bust through this door" he said.

      "What are you thinking?" She asked him.

      "Scaring the fuck out of everything in the room" he chuckled as the Ogre nodded before he moved his hand over a green gem, causing it to glow before he vanished into thin air.

(AppleJack 5 minutes earlier)

        The Elements of Harmony excluding Twilight, where standing next to the throne with Discord and Eris, where Celestia sat with her sister Luna and their Neice Queen Cadence of the Crystal Empire, holding her goal in her arms, in front of them was a large group of guards, and before them were the elite Caribou along with King Daine himself who had a large smile across his face.  "Just surrender Princesses, and save more lives" he said as Celestia sighed but before she could say anything the throne room doors burst open and a group of Twenty Caribou ran in before they barred the door. "What is the meaning of this!?" Daine roared as one of the Deers walked forward. "Where are the princesses?" He asked.

     "Dead sir, the stupid mares summoned a Demon from Tartarus and it incinerated the entire room, its chasing us right now" he said as all the ponies eyes widened at the news of their fallen friends and a demon.

      "Alright hold the Line, we shall slay this demon in a show of power, now where is it" he asked.

      "It was right behind us" he said moments before the sky light shattered an a hooded figure landed on top of the Caribou soldier, crushing him.

     "I'm right here" it said, the voice caught Applenack off guard as it was so familiar.

      "Big mistake demon" he chuckled before charging dark magic from his horns and blasted It at said Demon, only for him to raise a skull on a chain, which ate it before belching, causing Eris and Pinkie to fall over laughing, But Everypony else looked horrified at the living skull.

      "Shall we end this?" It asked as it drew one no it's swords, the hilt remind AppleJack of Tirak's horns while the blade was the same colour as Sombra's horn.

       "I will take your head" Daine roared and charged, only for the Demon to sidestep him and slice the back of his legs. "Ahhh what? No mortal weapon can pierce my flesh" he cried as the Demon chuckled.

      "I'm not a mortal any more and neither are my weapons" he said as Diane blasted him with magic, only for it to be absorbed into the Demon's sword moments before it was launched back at him, sending him back.

      "Kill him!" Daine ordered as he men charged, moments before the throne room doors were blown open and a Red Oni charged in and slammed the Caribou into the ground.

      "You have lost Caribou, you shall surrender to the crown or hang" the Demon said placing its boot on his chest and forced him down, his sword hovered inches from his neck.

      "What sort of Demon is this Sister?" Asked Princess Luna to her older Sister, who was silent as she watched the Demon, the look wasn't driven by fear or hate, but sadness. "Sister?" Luna asked.

       "Look!" Shouted Rainbow Dash as Sunset and Twilight ran passed the Ogre and to the throne.

       "Your alive!... but how?" Asked Rarity.

        "The demon protected us" Twilight said before a scream was heard, gaining their attention as they looked to the Demon incinerate Daine. When Daine was nothib more then ash, the two new arrivals turned towards the throne, causing the guard to tense as the demon  sheathed his weapon.

      "Seize him!" Roared Celestia as the guards charged only to be send back by a powerful gust of wind.

       "I thought you would be more accepting of your Nephew" the Demon stated as all the gems on its belt glowed before a portal opened up behind him and the Ogre. As he turned to leave, Celestia launched herself forward only to freeze in mid air, her wings began flapping "it was stupid to fly at someone who could control wind" he said before the two moved through the portal before he turned to Celestia and removed his hood and cowl to show his flat muzzle, small eyes, small ears, Brown and grey mane and brown and grey beard, his face was scarred as he released Celestia, who simply stood their shocked before the portal closed.

      "What are you orders princess?" A guard ordered just as Shining, Storm Shield and a large group of Veteran guards burst in.

      "Princess! Was it him?" Asked Shining as she simply nodded. "Where Is he?" He asked.

      "I drove him away" she said before dropping to her knees as tears filled her eyes.

       "Twilight Sparkles" Luna said looking to Twilight. "Find the Demon and purify him with the Elements" she said as Twilight nodded.

(Castle of the Two Sisters)

       As the portal closed, the stones on Kevin's belt diminished before he collapsed to his knees panting "Kevin are you okay?" Red asked as she rubbed his back, she sighed as she heard him sob softly, "hey come here" she said lifting his upped body up and held him against her "I'm here" she said as she stroked his hair gently.

      "Did you see their faces?" He asked as his voice cracked "the feared me..... AJ. ..... was terrified" he said as he was held against her chest as she rocks back and forth, she was used to him breaking down after combat as Kevin hated killing but it was the only way to survive in Tartarus.

      "Hey its okay, let's just give it time and I'm sure they will lighten up" Red said as she rubbed his back.

       "But.... but they had her.... she was among them..... the creature that stole me from my mother...... " as he was talking, black energy was forming around his hands "how dare Celestia have her so close to her, like a friend.... "he growled before Red slapped him.

      "No malicious thoughts, don't let the Demon out" she said before pull in him against her again as he nodded. "No rest, you use too much energy" she said before he nodded and passed out in her arms, she gave him a small kiss before she created a fire and set up their bed rolls and laid him down as she took the first shift.

(Canterlot)

       Luna was seated in her room, her legs crossed and her eyes closed as she reached out to find the Demon, she knew it would be dangerous to enter his mind but after what Celestia had told her about her Nephew, Luna believed that he could be saved from the darkness, her search was inturrupted when she sensed a powerful affliction in somepony's Dreams, so she dropped the search and reached out to the dream before entering, when she did however, she was created by a barren waste under a blood moon that drenched the land in a Blood red Hue, the sound of fighting could be heard below as she looked down to see the Demon from earlier fighting monsters, except he was in Equestrian Guard armour, he was badly wounded and cornered, the wolf demons slowly approached him as he stood fast. As the wolves charged, she froze the dream causing the Demon to look around confused before she Descended "be at ease Kevin, we mean no hard" she said landing in front of him before looking around.

      "What are you doing here?" He growled.

       "We felt a powerful Afliction so we came to quench it to allow for a peaceful sleep, but we didn't know that.... it would be a memory and that it would be so horrific" she said as she looked around.

       "Yes this was just be for I became a demon" he said sitting against the wall.

        "We see, we desire to talk to you, nephew" she said as he cocked an eyebrow.

         "Nephew?" He asked as she nodded.

          "Yes, you are our sister's, Princess Celestia's, Nephew so that means you are ours also" she said sort in in front of him before frowning when she looks into his red eyes. "You have seen many horrible things.... haven't you?" She asked as he sighed.

      "And done many Horrible things" he sighed again.

      "Yes and we can tell that you just wanted to see your family again and Celestia's actions were just, but we wish to give you a soulution" she said smiling as she grabbed his hands.

       "Oh?" He asked.

       "Yes, you see we became corrupted and wer banished to the moon for a thousand years, and we don't want that to happen to you as from what oir sister has said.... you are a better Nephew them BlueBlood, so we ask you if you would allow the Elements of Harmony to be used on you to turn you back to normal" she said.

      "You understand that with out that blood I will die" he said as she froze.

        "Explain" she asked.

         "I got a transfusion from demons blood, my body permanently changed to a demon so if you blast me with your Elements ... I'll die" he said as she rubbed her chin.

      "That is troublesome," she said.

       "I am not evil, I hate killing intelligent creatures, so I won't kill any one.... I just want to be able to relax in a warm bed with out the risk of being eaten or murdered for once" he sighed as Luna nodded.

      "We understand and we shall talk to our Sister and then we shall come to the Castle of the Two Sisters at noon tomorrow" she said.

        "I don't know where that is" he said.

         "Oh we have pinpointed your location and that is were you are" she said as he nodded. "We can not wait to meet you in pony" she said before vanishing.

      "The fuck just happened?" He asked