AN: so, typically I own no one - everyone is Yana-sensei's - except the plot of the fic, and consodering the manga's events, this might be kinda a bad fic, since we will moat probably have (SPOILER ALERT!) ciel's twin who murdered agni, judging by the reactions and all.

Anyway i had this idea in my head since the twin theory, so i decided to write it and post it (despite it being a tud bit late) and so, hope you enjoy?

(and as usual i'll update every 2-3 day at most, and everyday at the least)

Oh ans sorry for any mistake you might notice.

Enjoy!

Chapter 1

Their life had been pretty peaceful in it's eccentric way. They had been solving misteries for the queen, revealing different underground and illegal criminals, occasionally fought grim reapers or other deamons etc, etc. That is, untill they were nearing Ciel's 17th birthday. By that time Sebastian's mouth had started watering everytime he saw his Bocchan. The boy grew up (not physically - he barely grew three inches in the four years, and he remained scrawny as ever) to be a shrewd and extremely handsome young man, with a dazzling smile to throw at the feet of other nobles, making them - and unconsciously Sebastian - swoon over him. It was mid november when suddenly Ciel's health became increasingly weakened. He started having coughing attacks more and more frequently and on occasions he could barely breathe. He had inexplicable chest aches and suddenly lost more weight, despite him eating more.

"Bocchan, I suggest we call a doctor," Sebastian said with a worried glance as he brought in a tray of scones and Earl Grey. His master was currently fighting with a coughing fit, shaking his head vigorously while trying not to choke. His pale hands covered his mouth as his body shook with the coughs. Sebastian tried to soothe the fit by rubbing gentle circles in Ciel's back, and after a minute or so the coughs subsidized. Though - Sebastian noted with horror - the earl's hand was covered with blood.

"Sebastian, give me a cup of water!" Ciel wheezed out panting.

"Young master, the blood on your hand is proof of your quickly deteriorating health. Please do let me call a doctor," the butler insisted as he handed the cup of lukewarm water to the teen.

"I don't wish to consult a doctor," Ciel said obstinately after chugging up the water in one gulp. They had been down this road for the upteenth time during this week and Sebastian was really getting sick of it.

"Listen up, Bocchan," the demon growled gripping the teen's chin. His eyes glowed red as anger ran through his veins, though Ciel seemed unfazed and unafraid. "I am absolutely not going to let my meal whither away due to some foolish mortal disease. Not when this will probably be my best meal in millenias and I have been cooking it for nearly seven years now."

"Fine!" Ciel huffed after a few seconds, rolling his eyes. "Go ahead, call the doctor."

"Thank you," Sebastian beamed with a happy smile. He left the scones and the tea there and proceeded to call one of London's best doctors, Mr. Kingham. The next day the doctor arrived with his assistant, McCaughry. The doctor was a middle aged man with a bit of a tummy while the assistant was a younger, ginger haired and freckled, typical Scottish man.

"So where is our sickly earl, eh?" The doctor asked with a friendly smile as he entered. His and his assistant's eyes slightly widened at the sight of the deamon, but played cool.

"The young master is currently in his study, sir." The butler took off Mr. Kingham's and McCaughry's coat and hung them up. Sniffing the air, he realised one thing. The guests were not humans. They were grim reapers. He growled inwardly as he despised grim reapers and tried to display a convincing façade of respect in order to avoide a brawl for the sake of his master. "Please follow me, I shall lead the way," Sebastian said bowing. He lead the way up the stairs to Ciel's study where said boy was busy coughing up blood and choking on it.

"Bocchan!" Sebastian rushed to his aid as he opened the door and the doctor immediately prepared a shot - under Sebastian's scrutinizing gaze - to soothe the asthma attack. In a few minutes Ciel's coughs toned down to heavy wheasing.

"Young earl, you must take care," the doctor chided as he wiped off the blood that was trickling down the teen's chin. He asked for the earls symptoms, and his face got more and more grim as he listened to them. "This might not be a simple asthma."

"Then what could it be?" The earl asked with an unsettled look. The doctor and his assistant took a blood sample and listened to Ciel's breathing with a sthetoscope, which strangely, was by far more modern than the ones in the Victorian years.

"I have a nagging suspicion that this might be," the doctor sighed, "lung cancer. Though we will check your blood to be sure." As if on cue McCaughry took the small vial that contained Ciel's blood and placed it in a small cube shaped machine that had a screen which showed DNA calculations and the processing of the quantity and quality of different components of the blood.

"What?" Ciel and Sebastian blinked, digesting the new information. "Lung cancer? How can you know for sure? And what's that strange cube? I've never seen anything like that before."

"My boy, grim reapers never make mistakes when it comes to human illnesses," Mr Kingham declared sadly, confirming what Sebastian already suspected: they were grim reapers. "And we shinigamis are by far more modern than you humans. And this cube calculates the components of the blood and determines the deseas."

"I see," Ciel sighed, not even surprised by the fact that they were shinigamis. "And here I thought I was done with grim reapers," the earl muttered groaning. Sebastian sighed as if he too, was up till the neck with shinigamis.

"My boy, you will never be done with grim reapers as you have grim reaper ancestry," Mr. Kingham announced. "I'm surprised your demon butler never realised this."

"Excuse me?!" Ciel and Sebastian exclaimed with a surprised face, and well, Sebastian's demon identity was busted. Plus he wasn't sure what to make of the fact that Ciel - his delicious meal - apparently had shinigami ancestry.

"But hey, grim reapers aren't bad," McCaughry said with a cheerful smile. Ciel and Sebastian shared a look, that clearly stated the opposite. "Such as not all demons are bad either."

"If we don't count Ronald Knox, Grell Sutcliff and William T Spears, then maybe," Ciel grumbled, deliberately leaving Undertaker out. The doctor and his assistant shared a knowing look as if they knew these people. Most probably they did.

"How do you know for sure that the young master has grim reaper ancestors?" Sebastian inquired, looking suspiciously at the two guests.

"And more importantly, who is my ancestor?" Ciel added.

"I have no idea who he is - I mean I forgot the name -, but I know for sure that you have shinigami ancestors or at least one, because I saw your family tree recording in the big Shinigami Library," the doctor declared clearing his throat.

"I'm afraid it actually is lung cancer," McCaughry suddenly interjected with a grim tone, before Ciel or Sebastian could retort to Mr. Kingham's declaration and obvious lie of not knowing the ancestor's name. He showed the small cube shaped machine that had finished it's calculations and had 'Lung cancer: small-cell lung carcinoma' written on it's screen.

"... How much time do I have left?" Ciel asked, though by the end of the question another coughing attack raked through his body, making him spasm and shake. And again blood was smeared on the boy's hands and chin, leaving a bitter, copperish taste behind in his mouth.

"Two weeks at most," McCaughry said with a sad face after Ciel had stopped coughing his lungs out.

"Isn't there any demon or shinigami spell to cure me?" Ciel asked. Don't get him wrong. He wasn't afraid to die, he just wanted to spend more time with Sebastian. He had grown fond of the demon no matter how embarrassing that sounds. Well 'fond' is an understatement to describe his strong emotional, physical and sexual attraction he felt towards the demon. He was ready to give up his life, but not Sebastian.

"Unfortunately none that I know," Mr. Kingham said.

Ciel leaned back in his chair and sighed, "I see. Thank you for your visit, now you can leave. I wish you a safe trip back home. Sebastian, escort them out." The demon nodded and accompanied the two shinigamis to the entrance once they packed up. Miraculously a carrige was already waiting to bring the two doctor's away. Sebastian bid them goodbye with a pleasant face, though when they were out of sight his facade fell and frustration ran through his body. He felt a sudden tingling on his hand, where his mark was and knew he had been given an order, but he didn't know what it consisted of, so he teleported into Ciel's study where the boy was doing paperwork between occasional coughing fits.

"Sebastian, I think it is time for you to devour me." Ciel looked the demon in the eye and untied his eyepatch.

"What was the order you gave me two seconds ago?" The tall man asked kneeling in front of the boy.

"Oh it was just an order I wish I hadn't thought of in the spur of the moment... A joke," Ciel shrugged as if nothing happened and Sebastian was sure something happened.

"You know you can't take back an order, so whatever it is I have to adhere to it," Sebastian said meaningfully. "Even if you think the order but don't say it out loud I'm bound to it."

"I know. That's why I wish I had never said it..."

"Bocchan-"

"Sebastian, I'm nearing the end of my human life. So devour me. I hope the cancer I have won't give me a bad taste," Ciel said bitterly. Sebastian took in a deep breath and stepped closer. Something was off though. As he made a move towards Ciel's lips to suck out his soul, two things happened. His muscles froze, and he stood motionless, barely an inch between his and Ciel's lips. The other thing that happened was that Sebastian heard the unspoken order in his mind. 'This is an order. Be my butler and servant forever.' Now he understood why he couldn't move to eat Ciel's soul. It seemed like a perfect way to tease him. To see the food, he oh so painstaikingly cooked, for an eternity, not to be devoured. Though he didn't get why Ciel wanted to take it back. Eitherway, anger seeped into his being as he stood up and glared coldly at the boy.

"You little brat! I admit you are ingenious, but eitherway an annoying little brat!" The demon growled, his eyes turning red, skin becoming ebony black. "I'm bound to you for an eternity! Is that how you thank my services?! Is that how you want to embarrass me in Hell?! By serving a small little mortal and by starving me, for I am unable to form another contract, so I can't eat souls?!" He was roaring by the end of his speach, his body full black, eyes shining rubies, claws long and wings. Black beautiful wings and beautiful black feathers - though Ciel was a bit troubled at seeing the stiletto boots Sebastian was wearing. Said demon just got even angrier when Ciel's face held no other emotion, just a flicker of regret.

"I won't make your life boring. So don't worry about that." The boy turned his gaze out of the window.

"I really, really hope you won't!" Sebastian growled grabbing Ciel's chin hardly. His claws dug in the boy's porcelain delicate skin drawing blood, making Sebastian once again fascinated by the fact how delicate humans were.

"I wont. But for now, I want you to find a way to cure me. And sneak into the Shinigami Library and find out who my grim reaper ancestor was or is," Ciel ordered. Sebastian grumbled but turned back into human form anyway and went towards the door. Once he was there, he looked back and spoke angrily.

"Just so you know, young master," he spat, "today no sweets for you!" And he snapped the door shut in Ciel's stunned and hurt face. Then he poked his head in and corrected himself. "No sweets and sweet pastries or sweet bakeries for a whole month! And you will be having veggies as a dessert!" And snapped the door shut again, leaving to do the job his master assigned him.

"W-why...?" Ciel burried his face into his hands to stiffle a few pained sobs. "V-veggies... No, he - he promised me a chocolate geteau today..."