Still, if you want lemon, comment it either here or on the last chapter! 

Also, contains mayor anime references. BE WARNED!

Btw do demons lay eggs?

"YOU WANT ME TO FUCK RIN?!?!?" Sin exclaimed. Mephisto nodded. "Yep. I want you to get pregnant with him too." Sin just stared at him. The thing that worried her the most was probably the fact that she did not feel like having a kid. "I-I.. WHAT!", she exclaimed. "It's an order by the Vatican. Don't do it and they wont have a good reason to keep Rin alive, since he doesn't have good control over his flames.", Mephisto explained. "You have until January, also two months. If you are not pregnant by then Rin will be sent to execution.", Mephisto said. He then dismissed her. 

Sin walked towards her dorm. Her tail was lashing with rage and she was glaring at the ground. When she reached the dorm she smelled food and went to the cafeteria, where Rin and Ukobach had cooked something. Sin sat down and thanked them for the food, eating it in silence. The only sound to be heard was the chewing and her tail as it whipped back and fourth. Damn Vatican. Think they can use us as they please...

"You seem really mad, something happened?", Rin said breaking the silence. Sin looked up at him, giving him a glare that sent chills down her spine. "Mephisto made a deal with the Vatican involving us. It isn't really one I like, but he will kill you if we don't do it.", she grumbled. Rin looked at her, curiously. "What deal?" Sin sighed. "They want us two to mate to see if our kid gets the flames, then if it does train it to be a weapon." Yukio had walked in and heard what sin had said. He walked up to the two and sat down, grabbing some food. "Man those don't get you guys have feelings, huh?", he sighed. Sin looked up at him. 

"Like, I am OK with fucking somebody, since I already lost my virginity, but I don't wanna get pregnant! I'm sixteen for fucks sake!", She exclaimed. Rin blushed a bit at her first sentence, eating the food and listening in silence. "I wish I could speak to the Vatican and try to convince them that my body needs more time to evolve first.", she sighed. Yukio perked up, smiling. "I can take you to the Vatican, but I wont be there to back up your words. If you do something stupid it's on you.", he said. Sin smiled and thanked him. They decided to go there tomorrow, after school and work. 

The same evening Rin walked into her room with blanket and pillow, saying he had a nightmare. Sin of course let him use the spare bed. She laid down in her own bed, trying to get at least one or two hours of sleep. She actually fell asleep at some point, because when she opened her eyes again it was three in the morning. Sin had no clue what to do, so she dressed up and combed her hair. She realized her tail should be OK now, so she brought it forward. It looked almost recovered. One more hour and it would be back to normal. Sin decided to go for a walk around the school. She quickly packed a sandwich in her bag, together with a water bottle. 

When Sin reached outside the first thing she noticed was the Halloween decorations on the main school. The party they were having would be outside it, which weren't decorated. Sin guessed that the teachers had made the decorations. She saw was about to go out when she realized there was a letter outside the door to her and the two twins' dorms. She opened it, revealing a letter which seemed to be written by Mephisto.

'Hi hi, Sin. I know you will be reading this, since you are always awake first. That insomnia ain't leaving, huh? I have placed lanterns here and there, inside the school. There are a total of fifty three. I want you to light them with your flames. The lanterns can be anywhere between first and highest floor. They can be in classrooms or hallways, none in the bathrooms or anything like that. Good luck! /Mephisto <3'

Sin sighed. She walked into the school building and decided to start on the highest floor. After about two hours she had lit forty eight of the lanterns. She was currently at the first floor. Half of the floor had been cleared. She peeked into a classroom and let out a sound of satisfaction as she found another light. Forty nine done, four to go! Sin walked through the hallway, checking the doors. There was another lantern in the hall, which she lit. As Sin lit two more, she realized she had checked everywhere. There was one lantern missing. Sin walked outside of the building and found it. There was a big lantern hanging at the entrance of the school. Sin quickly lit it. When she was done, she walked out of the building.

The time was six o'clock. Soon people would start flooding in. Sin made sure nobody was watching, then she used her flames to boost herself up on top of the lantern. She sat down and began reading her book, waiting for the time to pass. Some time later, some students began coming. They saw Sin and looked at her weirdly, whispering about the blue flames in the lantern and how she had gotten on top of it. 

"What?", Sin said looking down at them. One of them was dumb enough to speak, so Sin listened with a smirk on her face. "We where just wondering how a jerk like you got up there and how the fire is blue.", the dumb guys said. Sin glared at him. "Oh I can show you both of them..." She jumped down her hand touching the ground. "First up, you are the jerk. Second, I am not. I am a demon." When the dude looked like he didn't believe her, she brought up her tail and smacked him in the face. "And I lit those lights. Want me to show you on your ugly hair, or your clothes?", she threatened. The guy looked scared now. Sin hid her tail again. Yukio had seen her. As he began screaming her name, chasing towards her, she jumped up onto the lantern again, saying 'ABORT MISSION! I REPEAT: ABORT MISSION!'. She then began scaling the wall up to Mephisto's balcony (let's say its in the main building). 

"Oi! Sin! Rin wanna talk to you! And get down from there!", Yukio screamed from underneath her. As soon as Sin heard the name she stopped. She jumped down all the way and landed on the ground, not making any sound at all. "What does he want with me?", she asked his brother. Yukio shrugged and told her he was at the classroom. She groaned and went to her dormitory to use her key for getting into the cram school. As she was told, Rin was in the classroom. "Well what did you want? I was scaling a building, you know. It would be fun to jump down from the roof onto that jerk...",  Sin said. She made a mental note to do just that later, but for now she might as well listen to what Rin had to say. 

"I just.. Don't say anything stupid at the Vatican. Please?", He said. Sin sighed. "That's all? What a waste of fun time..." She went and sat down at the seat at the back of the classroom, seeing as there was no need or time to go do anything. Sin grabbed her book. She was at a chapter about how Satan's children were born and so on. She came to a part which she found interesting. 'If two half-demon flame holders would have a kid two things could happen: The first, is that the child is born dead, since it became human. The body would be too weak to live inside it's mothers body. The second: The child would be a flame bearer like them. It would probably be half demon, like it's parents.'

Sin put a piece of paper in the page and closed the book, to put it in her bag. She looked up to see that everyone had arrived. Today they were going to discuss Summoning Circles, with professor Neugauss. As soon as he walked into the room he met Sin's gaze. Sin raised her eyebrow, sending him a questioning look. He walked to the middle of the classroom. 

"Everyone we will be having this class in another classroom. Follow me." With that he left again. Sin followed, grabbing her bag. The class left the room and followed the man. Having a feeling something with him was wrong or dangerous, Sin never removed her eyes from her. He stopped in front of a classroom and opened the door. Inside were a summoning circle. "Don't touch it, I don't want to have to redraw it.", Neugauss said. Sin walked up to the circle and crouched over it. 

"So you're a tamer, huh?", she asked the teacher. His eyes glinted. "Someone's sharp. Yes, I am a tamer. I will show you how to summon a familiar, but only some- if any will be able to do it. Grab one or two of the papers on the floor.", he answered. Sin didn't grab a paper however. She knew she was not able to summon a familiar, or any kind of demon. She sat down at the edge of the circle. 

"Oi, why ain't you grabbing a paper?", Shima asked. Sin looked at him and answered. "I already tried summoning a familiar once, I am not one of the few who can do it. Plus, even if I could I would need a bigger circle then those small papers." Shima nodded. The others poked their fingers with the needles they were given, drawing blood. The put it on the paper like they were told to. Shiemi and Izumo managed to summon demons. 

"Well then, is class over yet? I want to go to the Vatican as soon as possible.", Sin said. She was bored, having nothing to do. "What would bring you there?", professor Neugauss asked. "Have something I want to discuss.", Sin said. Neugauss nodded. "Well, you can go when class is over. Just 'cause you're a demon doesn't mean you get special circumstances.", he said. Sin glared at him. She stood up and walked up to him.

"The thing I want to discuss is something really important and it has nothing to do with this class, which I have no need in participating in right now.", she said. Neugauss looked down at her. "Very well. I expect you wont fail in this class though.", he said after a while. Sin left the room, looking for Yukio. He should have ended his shift by now...

"Sin! Ready to go?", Yukio said. He had just gotten outside and were walking her way. Sin nodded. The two walked to a corridor where nobody was and Yukio grabbed a key. He turned it with a 'click'. The two walked into a giant hall. Yukio showed her the way to a door, where he knocked. "Come in." 

Yukio opened the door and walked in. Three weird looking people sat in it, dressed like eggs or something in different colors. "Sin Kuromeru wishes to talk to you.", Yukio said, bowing. "Very well.", the man in the middle said. His color theme seemed to be blue. To his left a pink themed person sat, while to his right a green themed person sat.

"What would you want to discuss with us?", the green themed grumbled. "I would like to discuss the little deal you had, on what I will have to do so that Rin Okumura will live. I do not have any intention of having a child with anybody, plus the chances of a living child to be born by us are not really high.", Sin said. The weird dressed people started whispering to each other. "What makes you think that we would change our minds?", the pink dressed said. 

"Nothing. I don't think you will change your mind, since you are all selfish and don't care about what I feel because I was unlucky enough to be born to Satan.", Sin answered. The people gasped and Yukio took a step forward. "Mr Okumura, I would like it if you didn't interfere." Yukio backed down again. Sin bowed to the three people. 

"This is my opinion. I would like it if you sent me a letter of what you will decide on, but we both know that you wont change your minds. I am just trying to be polite. Bye and thanks for your time." With that Sin left the room, leaving four surprised and confused 'humans' in it. Yukio bowed and left the room, hurrying up after Sin. She had grabbed the key to her dorm and was putting it in. She walked inside before Yukio reached her. I don't know if she was clever or reckless.. He thought to himself.

Sin sat down on her bed, sighing. She knew that she had gotten their attention, but probably she hadn't gotten anything else. Since the Halloween party was tomorrow, Sin decided to call Shima. He was supposed to work with decorations together with her. "Hello? Shima here!", the phone answered. "Hi! It's Sin. We should probably start preparing decorations and such. When are you available?", Sin politely asked. "Eeemm, let's see.. Meet me at the yard in five?", Shima asked. Sin accepted the offer. She went and grabbed the money she had gotten for decorations and such, before heading towards the yard.

About a minute later Shima came up to her and they walked towards True Cross Town, ready to shop. Sin listed off things they needed to buy, like torches, fake spider webs, a cauldron which she would fill with blue flames, a suit for Shima and some papers, where he had decided to write creepy messages. When they had gotten all the things on the list, they began looking around for stuff to add. 

"Sin. Look. At. That." Sin turned around to where Shima was looking. It was a big pentagram, made out of some wood looking stuff. It had to be at least three meters from side to side. Sin immediately got a plan and shared it with Shima, who grinned. The two bought it and carried it home earning some weird looks from the townsfolk. As soon as they reached the academy grounds Sin grabbed the pentagram. She carried it alone, while Shima held the other things. When they reached the party area, they saw that some people, including Rin, also had decided to start preparing the party. 

Sin placed the pentagram on the ground and grabbed some candles. She sat down in the middle of it, making a demonic smile. She lit the five candles, murmuring a chant. Rin turned around, together with the other Exwires at the place. "Oh drahý otec. Oh drahý ďábel. Prosím tě, poděl se o své všemocné síly s lidmi, jako vaše jediná dcera." (translate it from Czech). Sin opened her before closed eyes. She was lit up in the blue flames, creeping the others out. Her hair began floating around her head and her tail was doing weird movements behind her back. Sin bared her teeth and made a low growl. Everyone began doing an attack stance, clearly unsure of the situation.

"OH MY GAWD YOU SHOULD SEE YOUR FACES!!!", she suddenly exclaimed extinguishing the flames. She shot up and began laughing herself to death, while the others stared at her. Shima were the first to laugh, the others quickly starting staring at him too. Sin wiped a fake tear and stood up normally. "That was literally the only reason me and Shima bought this. Oh I wish Yukio would've been here. Oh wait, why not just do it when he comes..! You guys have to be good actors for it to work, tho.", Sin said. The others first shared glances.

"Oh. My. God. That's the best idea. EVER!", Izumo exclaimed. The others soon decided they were in for it. Rin decided that he would get Yukio to the spot, while the others positioned themselves. Sin decided to sit down in with legs crossed. When Yukio and Rin walked into the room she looked up. "Welcome, brothers. Good that both of you are here. We can now start the reuniting to Gehenna." 

Sin quickly put her hands together, setting  the candles on fire once again. She began murmuring the same chant as before. "Oh drahý otec. Oh drahý ďábel. Prosím tě, poděl se o své všemocné síly s lidmi, jako vaše jediná dcera." Sin engulfed herself in her flames once again, her fangs growing sharper and her eyes starting to glow blue with a red spot in the middle. 

The others took the attacking stance, preparing to fool Yukio at the twitch of Sin's tail. "Oh dear Satan, bring me and out brothers back to the land of demons.", Sin murmured. She looked up at Yukio and began doing that same growl. Yukio quickly pulled up her gun. Sin flicked her tail. The flames disappeared and everyone burst out laughing."YOU SHOULD SEE YOUR FACE!", Sin exclaimed. Yukio however was not amused.

"Aw come on Okumura-Sensei! Admit it was a pretty good prank. I know you thought it was real for a second. I even chanted, I mean that was a pretty well thought out plan!", Sin said. Yukio just sighed. "We'll see if Mephisto finds this fun...", he grumbled. "Someone recorded this, right?", he asked. Shima raised a hand and threw Sin's phone to the owner. 

"Well then, let's see what principal thinks of this.", Yukio asked. Sin grinned. "Oi, Rin. You should learn to do this too! Anyways, need to go to Mephisto! Shima, you know what to do with the decorations. Cya later!", Sin cheerfully said. She walked with Yukio out of the room, her tail curled up in amusement. The others stared after her, giggling in amusement. "Yukio does know that Mephisto will think this is hilarious, right?", Rin whispered to the others. They shook their heads, giggling even more. 

"Mephisto, I want to talk to you about a student.", Yukio said, knocking on the door. It opened revealing Mephisto sitting in his chair at the desk. "Well then, if it isn't my dear Sin. What have you done now?", Mephisto asked in amusement. Sin threw her phone to Mephisto, who grabbed it and watched the video. 

"Mister Okumura, I don't see what the problem is?", He said after watching it for the third time. "Exactly what I thought! It didn't harm anyone, or anything. Plus it's nice to have some fun after working our asses off with preparations.", Sin put in. Yukio just glared at her. "Well, what's the problem with teens enjoying themselves for once?", Mephisto asked. Yukio stared at both of them. He had clearly not thought the thing through enough, because he soon left the room. 

Sin burst out laughing, slapping her knees. Her tail was happily wiggling from side to side, while Mephisto looked at her. He sighed. "Well then, I guess you should go back to preparing the party. Also, the Vatican sent you this.", he said handing her a letter. Sin nodded and left the room. She had sent the video to Mephisto, who were watching it over and over in amusement.

---:o:---

"So, how did it go?", Bon asked Sin as she walked into the party area. Sin sent him a grin. "Mephisto was totally laughing his ass off! Yukio was completely left without words!", she exclaimed. The others began laughing yet again. After a while they had gotten quieter and were mingling to each other, preparing the stuff. Sin and Rin had carried a large table to the party area. 

Sin had picked up her headphones and were listening to music, preparing the stuff. She lit the candles on the table, where the food and snacks would be served. Her tail was slowly wagging matching the music. She was listening to a calm and sad song she had started liking. It was originally from a otherwise brutal anime, Attack On Titan. The song was called 'So Ist Es Immer' (I recommend it, if you need to calm down or relax. (or if u love Levi)), and Sin had learnt the chords for it on guitar. She was quietly listening to the music, lighting the candles and placing down the table cloth. 

Rin noticed the change and watched her for a while. He began walking towards her, making her turn around with a questioning glance. "Just wondering what you were listening to.", Rin mumbled. Sin began doing something on her phone and soon Rin's let out a 'ding' sound. He looked at it and was sent a audio, or song, from Spotify. "Headphones are home", he said disappointed. Sin took out one of hers and cleaned it with her shirt, then handed it to Rin who put it in his ear. She started the song from the start again. 

"Hey, look.", Bon whispered to Shima and Konekumaru. He nodded towards the two demons. The guys sat and looked at them. Both their tails were wagging and their heads were both tilted towards the night sky. The two were sharing the same pair of white headphones, obviously listening to something. Rin tilted his head towards Sin, whispering something. Sin nodded and entwined her tail with Rin's. The two looked up at the sky again. 

"I ship it.", Shima whispered. The two guys besides him nodded in agreement. The two girls saw that they were whispering and approached them. Bon nodded his head towards the pair again. Izumo and Shiemi both looked at them. Izumo chuckled. Shiemi looked at the two, thinking that they looked happy. 

About half an hour later Sin and Rin were done with their parts and were sitting on the ground, scrolling through Sin's playlist. "Hey, start the song again!", Rin whispered. Sin nodded and started the song again. The two were sitting beside each other, Sin leaning on the taller demon. Rin put his head on top of hers. Their tails were brushing against each other again, moving in the rhythm. The two were talking about random stuff, agreeing on what anime was best, what games to look forward on, what they hoped on the next part of season 3 in Attack on Titan, etc. 

"Hey, Sin.", Rin asked after a while. "Mm?" "When you said you weren't a virgin some days ago, were you serious?", he asked. Sin nodded. "With who?", Rin asked out of curiosity. Sin looked up at him. "I ain't a virgin physically. But mentally, I think I watched too much adult stuff for the rest of my life and over, which is why I think of my self as not being a virgin.", Sin explained. Rin blushed at the thought. 

"I'm getting tired. If we want to have time to shower we should probably be heading towards the dorm.", Sin said after a quiet moment. Rin nodded and they stood up. "Guys, you can stop staring now. It was creepy enough half an hour ago.", Sin said looking back at the others. "Don't you dare start any rumors, by the way.", she added. The others blushed and nodded, clearly not knowing they had been found out. 

(Time skip to the next day brought to you by: Levi going insane and shredding that one titan who killed his childhood friends.)

Sin yawned, waking up. She had been awake until two in the morning when she fell asleep. Now the female was awake again, two and a half hours later. Might as well start readying my Halloween costume. Sin stretched. She had slept in her own bed, since Yukio would be back from work earlier from now on. 

She had decided against dying her tail, since it was still a bit sensible from the 'dip'. Therefore, she decided she were going to cosplay. She quickly showered, making sure to fluff her tail and hair up extra. Sin put on a grey t-shirt and her white pants. Sin struggled a bit to get the straps on her legs and body on the right way, but finally managed to do it. She pun on the brown leather costume, with a winged crest on her back. Finally, she put on the fake ODMG.

https://www.google.com/url?sa=i&source=imgres&cd=&cad=rja&uact=8&ved=2ahUKEwiJkpua_q7eAhWvw4sKHVNNApcQjRx6BAgBEAU&url=https%3A%2F%2Fwww.pinterest.com%2Fpin%2F369084131942933983%2F&psig=AOvVaw0iRtc_61vvxeN4HHjlKfN9&ust=1541017104215558

(the link is a pic, just imagine it like Sin in the suit ;P) Copy paste it in a browser and u should get da pic! Click it for better view. I decided not to do a wattpad pic, since for some they wont load. (Might not work good with phone, idk)

(srry i had to, i am kinda obsessed with AoT (If you don't get it, Sin is wearing an Attack On Titan cosplay. Dont know how it looks, just google for like 'Aot survey corps levi' or smth)... And blue exorcist... And tokyo ghoul... And Sao (dont hate on me).. And Yuri!!! On ice.. And literally like five more anime's so ye.)

When Sin looked herself in the mirror she decided to put her hair into a messy bun. She had actually put in a real knife among the fake swords in the ODMG, just in case. She had secured it though, so you would have to pull quite hard for it to actually come out. When she walked out of the room, the time were already six thirty. The people preparing the party (which would happily last all day) would of course have to be there at seven thirty, the party starting at nine. 

"Hi Sin. Nice cosplay, where did you manage to get such a good looking ODMG?", Rin said from the hallway. Sin told him that she had made it herself, then walked to the cafeteria. She quickly ate a sandwich, making sure not to mess up her outfit. When she was done she brushed her teeth, then left with her phone in the pocket of the jacket. She was walking across the yard, earning a few looks from the boys.

"That's probably the best AoT cosplay I've seen in my life...", one mumbled. The other mumbled in agreement. Sin smirked and walked to the party site. Surprisingly, Bon and Konekumaru was already there. Bon had dressed as John Cena (im sorry), while Konekumaru was a wizard. Sin giggled at their costumes. She had her tail hidden in her pants, surprising the boys.

"Morning. Nice suit. I didn't think you would be one to like memes!", Sin greeted walking up to them. The two greeted her. "I didn't think you would watch anime", Bon countered. "What an understatement. To think I was an underling...", Sin joked, faking a hurt expression. They burst out laughing. Shortly after Izumo got to the spot, dressing up as Widowmaker from Overwatch. Shiemi were simply wearing her normal clothes, just with plants here and there. 

Last on the spot were the two demon brothers. Sin laughed at their matching clothes. Rin had dressed up as a maid while Yukio were a butler. Yukio were clearly embarrassed. Sin giggled at the choices of suits. Rin walked up to the guys, greeting them with a grin. "I bet Yukio that I would go dressed like this, he owe me a meal now!" The others burst out laughing, Rin joining them. Takara had decided not to come, while Yamada (Shura), were just wearing the same cape as normal. Rin put on all the freshly made food and snacks on the table, while Bon began starting the music. 

Sin decided to go out and peek at the students outside, wanting to see their outfits. She climbed up one of the pillars in the yard, looking down on the queue to the exit. Some students noticed her as she stood and looked down at them. She was just about to leave when Bon said he would be opening the gate...

I dun know if this counts as a cliffhanger, but I don't care anyways. Here's your chapter, with about 4.7 K words!