Title: Space?

Summary: Fanfic for the dgmsecretsanta 2015 on tumblr. Kanda learns the true wonders of the Christmas spirit, courtesy of Lavi. Alien/Spaceship au

Rating: K but Kanda Language

Fandom: -Man

Pairing: Lavi/Kanda

Words: 2k+

AN: I don't proofread much so more likely than not it has grammar errors, also this is all fluff all the time

Space?

"Lavi, can you explain to me why you have leaves taped onto your doorway?" Kanda glared up at the plant as Lavi opened the door to reveal it. He would never understand Lavi and his human behaviors. He has met many humans while being aboard on this expedition but not one so ingrained with their odd customs.

"I'm glad you asked my love-"

"Don't call me that."

"-it is actually mistletoe, it's about Christmas time so I took to decorating my living space." Lavi smiled brightly and dramatically while stepping out to the side so Kanda could take a gander at his festive living quarters. Of which consisted of a foot tall plastic tree and lights taped crudely around the room. But worst of all Lavi was wearing the absolute worst sweater Kanda had ever seen, he wasn't even sure where he managed to get a hold of it on this ship. Most of the time Kanda figured Lavi was shitting with him anyway so he took to seeming completely uninterested with his antics.

"…Right. Well, this is for you to read over. It needs an accurate translation and our systems don't have a precise enough handle on the language it's written in." Lavi pouted and took the books out of Kanda's arms and threw them onto his mattress.

"Do you know how old those things are? Don't just throw them."

"Yeah yeah I got cha, I do this kinda stuff all time don't worry about it," Kanda was about to argue but Lavi cut him off, "Hey Yuu, how much do you know about Christmas?"

"Nothing, and I didn't come here to talk, you have work to do so get to it."

"Oh no you don't." Lavi grabbed his arm and pulled him into his room the second he started to turn to leave. Lavi pressed the button to close the door and ushered Kanda to take a seat on his bed.

"Fine, what's so special about this 'Christmas' and what's it got to do with greenery?" Lavi laughed to himself and sat at the head of the bed facing Kanda and brought his legs up to cross them. Lavi was very interested in Kanda, he was completely unfamiliar with his kind, which really took him by surprise because he could list a shit ton of intelligible life.

Kanda looked inherently human but he came from a planet with temperatures lower than any human could survive in, there wasn't a star close enough to bring any kind of warmth to it. And being adept to the impossibly cold climate and relatively no sunlight left Kanda with significant differences to humans. For one, he was almost paper white, most likely because he's never seen the light of day for entire generations. His eyes were similar to cat's eyes as they had to let in as much light as possible in order to see, which was pretty scary when they would get all black and Lavi has definitely seen that happen more than he would have liked. And his natural body temperature was so low he was cold to touch. Lavi has only touched him a handful of times and of that has only touched actual skin once. Which caught him off guard because he felt like an ice cube.

"Christmas isn't entirely about greenery but I guess it does play a significant part in the décor." Lavi scratched at his mouth while glancing over towards his poorly lit Christmas tree. Lavi was aware of Kanda's interests in plants, and well, anything that you can plant and grow. Kanda said it was because he has never seen it on his planet and it was really fascinating to him (in more of a Kanda dialect of course because the man has never admitted to liking anything in his life). Thus Lavi tried to play up his knowledge of botany, as limited as it was, he was historian not a gardener. Lavi stared back at Kanda who was starting to look uninterested so Lavi had to quickly come up with a plan to keep him from leav-

"Why do you always have to cut your plants?" Kanda asked looking at the mistletoe hanging from his door. His inquiry surprised him because he didn't realize how much he actually cared about plants. And thus Lavi got an idea.

"You don't have to worry about it Yuu, this plants is very very different than normal ones. It doesn't need to be planted to grow." Lavi stood from the bed and walked towards the mistletoe, feeling Kanda's eyes on him as he passed. Lavi leaned against the wall and motioned Kanda to stand next to him. He frowned but curiously followed. As he stood in front of him, Lavi pointed up towards the mistletoe above them and Kanda's eyes followed.

"For this special little number to grow all you gotta do is show some lovin." Kanda looked back down at Lavi and his frown deepened.

"What the fuck are you talking about."

"You basically gotta kiss under it."

"That's literally the stupidest thing you've ever said to me. And you've said some stupid shit."

"No! It's actually true! It's a big Christmas tradition to kiss under mistletoe it brings good spirits and makes it grow."

"Kissing doesn't make plants grow."

"And how do you know, you've never even heard of mistletoe before!" Kanda crossed his arms and grew angrier, "If you don't believe me you can ask Lenalee, she'll tell you how kissing under a mistletoe is completely a thing! I swear!"

"I still don't believe you, you always lie to me." Kanda shoved Lavi away to press the button to open the door and shut it behind him before Lavi could follow. And here Lavi had thought he had been very clever but perhaps Kanda is not as dense as he had anticipated.

The violent knocking almost caused him to fall out of his chair. He collected the books that fell onto the floor and placed them back on the desk before going to open it. Lavi had to force himself not to laugh when he saw Kanda's face.

"So what brings you back to these neck of the woods hon?" Lavi leaned on to the doorway and watched Kanda cross his arms and scowl at own shoes.

"I'm mad."

"I can see that."

"You always lie to me so how am I supposed to know when you tell the truth."

"Did you ask Lena about it?"

"Lenalee said that it was an actual tradition but she kept laughing about it when I told her what you said so you must have been lying about something."

"What did she say exactly?"

"That people did actually kiss under mistletoe and it was a normal thing to do. But she wouldn't really say anything more than that, she told me to ask you!" Lavi tried to keep a straight face while Kanda was talking because he was starting to get really passionate about it. Telling Kanda that kissing makes the mistletoe grow might have been a mistake, now he was generally confused on how it could possibly happen and if he found out that Lavi was lying he will definitely lose his head. But Lavi is not a man that fears death.

"You know… we could always test it out to see if it works." Kanda got very quiet, arms still crossed, he looked away then back at Lavi, then towards the floor, then up towards the mistletoe, then back at Lavi.

"That's… weird."

"You think everything is weird Yuu." Regardless of what Lavi believed Kanda was not stupid, he knew what Lavi was trying to do but it would bother him to no end if I did not. Find out. The truth. If he kissed him and it didn't grow then he would know Lavi was lying but then he would have kissed him and that would mean Lavi would have won. But if he didn't kiss him then there would be no way he would know for sure and Lavi certainly wouldn't admit to lying to him.

"I don't think-"

"YUU. What's the worst thing that could happen? Come here." Lavi pulled Kanda into his room and closed the door behind him. Kanda had backed himself onto the door and Lavi followed. They weren't touching but Lavi was definitely too close for comfort, "So do you want to do it or not? Just say yes or no."

Kanda was staring him in the eye as if he had been issued a challenge. It was incredibly intimidating but Lavi wasn't going to back down now, not after getting this far. So he stared back until Kanda had to fold.

"Fine." Kanda finally said after breaking eye contact. And Lavi wasted no time and quickly leaned in to kiss him softly on the lips, directly beneath the mistletoe. He hadn't wanted to break it so quickly but Lavi had forgotten how cold Kanda was and broke the kiss almost immediately. After he pulled away, Lavi lingered close to see what Kanda would do next. Without even touching Lavi could feel the cold that was radiating from Kanda's body, the man had never let him this close to him before to notice.

Kanda had kept his eye closed for a moment after the kiss broke and he slowly opened his eyes. Before Lavi knew what was happening he was pushed back, tripping over his bed and onto the ground as Kanda looked up to see any change in the mistletoe above.

"I knew you were a liar, nothing changed!" Lavi tried to pull himself off of the floor before responding.

"I didn't lie, you gotta give it some time to soak up the energy ya know, that's how plants work."

"Then how long does that take."

"I dunno, couple hours, but I guess we could help speed it up."

"How so? Oh no, no more kissing."

"Why not, you were into it before."

"I was not 'into it'. It was for science."

"Science my ass just let me kiss you again." Kanda was once again in between Lavi and the door, debating on pushing him back down or seeing how things would develop. Lavi had his body against Kanda, noses touching, waiting for Kanda to react. Kanda looked up to make eye contact and Lavi tried to keep his ground.

"Why are you so hot?"

"I really hope you meant what I think you mean."

"You're like a fucking space heater."

"I knew it was too good to hope for."

"What are you talking about?"

"Hot is a homonym in which it can- oh never mind. And I'm not hot, you are literally below freezing."

"That is untrue, I am generally around 15 degrees Celsius while living aboard this ship. It's always so hot here so I have to stay this temperature."

"Are you saying you can control your body temperature?"

"Well, no, not exactly. This is my natural body temperature, but it rises depending on how cold it is"

"Could you make your body hotter right now?"

"Yeah if you wanted me to fucking die. I've never had to live in temperatures above 10 degrees, if I get any warmer I'll probably die from a heat stroke." The mistletoe that was above them slowly started falling as the tape Lavi used to keep it up started peeling off the wall. It landed right on Kanda's nose and he managed to catch it before it fell onto the ground.

"This isn't even fucking real, it's plastic!"

"Now now Yuu, there's no need to get angry about it, we were just having a bit of fun." Lavi backed away before Kanda really decided to hit him. He was pretty much seething with rage, crushing the poor mistletoe in his hand, "this really is all on you anyhow, where do you think I would even get real mistletoe from here? You should have realized sooner."

"You got to be fucking kidding me, you asshole." The crushed mistletoe hit Lavi right on the nose after Kanda threw it at him. "You better have those giant ass books translated by tomorrow or I'm throwing all of your shit into the trash compactor."

Kanda had left hurriedly, most likely out of embarrassment. Lavi would have been more amused by the situation if Kanda had not threatened him with that before, that's how he lost his lucky bandanna and he didn't feel like losing anymore of his clothing to an enraged Kanda.

AN: Next up is the always appropriate coffee shop au (Lavi/Kanda/Alma)