A/N: So, it's time for a new story! Woo! I started writing this well over a year ago, and it's finally close enough to finished that I can post it. It doesn't have an ending yet, but that's because I decided that what I wrote was too cool for this story and stole it to use for "A Second Neko". I've written thirteen chapters so far, so hopefully I'll get the ending and the epilogue written before I finish posting them. ;) Speaking of which, I'll be posting new chapters of this story once a week.

Warnings: 1) mpreg, obviously, but it's also fpreg because: 2) Allen will be female by the time this story is over. 3) The language in this story is a little more graphic than I normally write. If you're uncomfortable with descriptions of female anatomy, proceed with caution. 4) There are two lemons in this story and they're both Yullen.

The same semi-AU rules I always use apply here: Allen's 18, Neah is gone, and Cross and Lavi are alive.

.x.x.x.x.x.x.x.x.x.x.x.x.x.

As much as I loved to tease Allen about his recent weight gain, it was starting to worry me. He'd been fitted for new pants just three weeks ago and he was already outgrowing them. For the most part, the weight was collecting in his belly; he had quite a bit of a gut. Of course, I was the only one who got to see it; he made sure to hide it under thick or baggy clothes around the rest of the Order. That's not to say that they didn't notice that he was getting heavier, it was hard not to with how bulky the sweaters made him look, but the weight gain was chalked up to his metabolism finally slowing down.

It wasn't hard to figure out that Allen was bothered by the weight gain. He increased his training, but that left him too exhausted for our night time activities, which frustrated us both. And he cut down on his food intake as much as he could stand, but then he complained constantly about being hungry. I don't know how I found the patience to put up with him. But the worst part was that despite all his work, he continued to gain weight.

I tried to get him to go talk to Komui about it, but he wouldn't go. He said he'd talked to the Supervisor two months earlier, when he'd first noticed the weight gain, and that the Chinese man had had nothing helpful to say. I argued that something might have changed, but all that did was start a fight. He stormed out before we got to the sex.

.x.x.

That fight last night really put me in a bad mood. It didn't help that I was starving at breakfast. Forcing myself to stick to my usual sized order was hard. I felt like I could easily eat twice that much.

I finished off the last dish quickly, but then I sat at the table, waging an internal war with myself. My stomach wanted more food, but the heaviness of my body was telling me that I had already eaten way too much. After weeks of this struggle, my willpower was fading. I was almost ready to give up and finally fill my aching stomach. But my pants had barely buttoned that morning and the waistband was digging uncomfortably into my skin. So until I was ready to accept being fat, I would continue having to fight with myself.

To be fair though, with the exception of my growing gut, I was still far from being overweight. I was so skinny to begin with that the weight I'd gained had simply bumped me up to a size that would be considered normal for my height. So I wasn't fat, I just felt that way. The teasing from my friends definitely didn't help with that feeling.

While I was sitting there, alone at my table, something inside me moved. A literal thing inside of my belly moved. It started out as a couple little flutters, which I had been feeling for the past few days and attributing to stress, but soon it became obvious that something was pressing against my skin from the inside. To say that it freaked me out was an understatement. I was horrified to my core. There was something inside my body and it was alive.

Forcing myself to remain outwardly calm, I eased my overweight body off the bench and walked down to Komui's office. I tried to explain what had happened rationally, but I was so frantic that the words came out completely jumbled. He at least understood that I was upset about something that was happening to my body, because we moved from his office down to a private room in the infirmary.

He had me sit on the examination table, and he pulled a chair over and sat facing me. "Now, what seems to be the problem?"

I tried to explain, but I couldn't figure out how to say it and kept tripping over my words. Deciding it would be quicker to show him, I took off the oversized sweater I was wearing.

.x.x.

Komui couldn't help gaping at the sight of Allen's exposed belly. It protruded a good three or four inches from the rest of the boy's body. Not wanting to stare, he tore his eyes away from the mound of flesh. In doing so, he noticed that that wasn't the only area where the white haired exorcist had gained weight. Allen's pants were clearly tight around his hips, and the teen's chest looked puffy and swollen; it could almost be said that he had breasts.

Allen was staring at his lap, still struggling to find words. The thing inside him had started moving again and the feeling was making him even more hysterical.

Komui placed a hand on the boy's shoulder. He needed to calm him down before he had a panic attack. But instead of calming Allen, it had the opposite effect. The young man finally let go of the tears he'd been holding in. He grabbed the Supervisor's wrist and moved the man's hand down to his belly.

The skin didn't squish under his touch like Komui expected. Instead, it was firm, like it was stretched taut. Then he felt what Allen was trying to show him.

It was unmistakably the kick of a baby. Komui had been a teenager when his mother was pregnant with Lenalee, and that feeling wasn't something he would ever forget. Somehow, Allen had gotten pregnant.

The Supervisor looked over the young man with a fresh eye. There was no doubt about it. Allen wasn't just pregnant, he was pretty far along too; somewhere in the fifth or sixth month at Komui's best guess.

But best guesses wouldn't be good enough to calm the hysteric exorcist. And telling a man he had something that only affected women wasn't something Komui could do lightly. Especially when he didn't know why it was happening.

The Chinese man sighed and pulled his hand away. He placed it back on Allen's shoulder. "Allen... Allen. Breathe."

It took several minutes, but eventually the baby stopped kicking and Allen's sobs dissolved to silent tears and the occasional hiccup.

"Allen. I know what's going on." Komui almost smiled at the hope that filled the young exorcist's eyes. "But I need to do some tests to be sure about it first."

Allen had relaxed at hearing that Komui knew what was wrong with him, and the tone he'd used had calmed him out of thinking that it was some life-threatening disease, but the thought of tests made him nervous. "What kind of tests?"

"Just a basic work up. Nothing too out there." It was a lie, but it was to keep Allen calm. Komui was planning on doing every test he could think of on the young man. If Allen truly was pregnant, then Komui had to figure out how and why it had happened.

The tests started out slow: height and weight measurements, questions about the things Allen had been eating, drawing blood. But even those were too stressful for Allen and he passed out.

Komui had no qualms about continuing his exam while Allen was unconscious. In truth, it made things easier. That way he could do the ultrasound and the full body scan without having to explain to Allen what he was seeing.

He finished the tests and got the results. Those results were then meticulously compared to every single one of Allen's past medical records. He now knew how this impossible thing was happening. All that was left was to wait for Allen to wake up so that he could ask him a few final questions.

.x.x.

I groaned as I regained consciousness. The light in the room was too bright, and my body felt heavier than normal. Komui handed me a glass of water and that helped a lot. But the serious look on the Supervisor's face put me on edge. "What did you find out? What's inside me?"

"I'll get to that, Allen." Komui sighed. "But first I need to ask you some questions, and I need you to be completely honest, no matter how embarrassing the answers might be."

I nodded slowly, beyond nervous about what he would ask. "Ok..."

"Were you sick about four months ago?"

I frowned, four months was so long ago for trying to recall something like that. "What do you mean by 'sick'?"

"Nausea, vomiting, aversion to certain foods."

I sighed, remembering the daily early morning trips to the bathroom to throw up. "Yes."

"And how long did it last?"

"A couple months, I think. It was a while ago though, so I can't be sure."

Komui nodded and jotted something down on his stack of files. "And are you sexually active?"

"What?! No!" My eyes went wide with horror and feigned innocence.

"That's not the truth, Allen." Komui wasn't fazed by my lie. "I know from my tests that you aren't a virgin. So can we try this again?"

I glowered at him. "What does that have to do with what's wrong with me?"

"Everything." Komui smiled gently. "If it makes it easier, all I really need to know is if it was consensual."

"What does that mean?" I frowned, trying to figure it out for myself.

"Did the sex happen with your permission or were you raped?"

My frown deepened. I did not want to talk about this. Telling the Supervisor that I wasn't raped was going to lead to me having to admit that I was gay, and that was never going to happen.

Komui didn't seem surprised that I didn't want to talk. "Look, I know it was with another man and that it's been going on for a while."

It was obvious that he had more to say, but I needed to stop him there. "How? How can you possibly know that?"

Komui briefly struggled to keep a straight face. He cleared his throat. "An examination of your rectum revealed scarring and other signs of repeated sodomy. Add in the traces of semen, and those kinds of marks could only have come from sexual contact, meaning that they were caused by a man's penis."

It took a moment to absorb everything he had said. And once I had, I blushed bright red. "Oh."

Komui smiled and placed a hand on my knee. "I know homosexuality is taboo, but I don't care about any of that. I just want to know if I need to worry about your wellbeing, that's all."

"I wasn't raped." The words were quiet. I didn't want to say them. But Komui was clearly not going to drop the subject until he got an answer. And if he already knew I was gay then it didn't matter anyway.

"That's good to hear. Now, are you still with the same man you were with five months ago? Or have you moved on?" Komui was once again writing something down.

"We're still together..." I was going to lose it if Komui's next question was 'who?'

But he just nodded and wrote some more. Though, given what his next question was, I would have preferred to continue talking about my sexuality. "Now, on a different subject, have your nipples been hurting?"

"What?!"

Komui didn't say a word; he just patiently waited for me to answer the question. I swallowed. "I- Well, I- I wouldn't say that they hurt... more like they're a little sore... They ache sometimes, but they only really hurt if they get bumped. ... ...Does this have something to do with what's happening to me? I assumed that they were just sore from the fat in my chest."

I was given a strange look. "The weight you've gained in your chest isn't fat, it's breast tissue."

"Huh?"

"Never mind. We'll circle back to that." I glared at him, but he was looking down at his papers. He mumbled a few things to himself that I couldn't make out, and then he sighed. "Well, for starters, you're about fifteen pounds underweight."

"'Underweight'?!" I was completely thrown by that statement. "How can I be underweight?! I've done nothing but gain weight over the past couple months!"

"But not as much as you should have. You really should be eating more..." Komui gave me a look. "You've been restricting your diet, haven't you?"

"Of course I have! In case you haven't noticed: I'm fat!" I don't know where the anger came from, it was just there. "What the hell does any of this have to do with the thing that's inside me?! The way you're talking, it sounds like you want that thing to be there!"

Komui smiled gently at me and his words sent a chill down my spine, instantly killing my anger. "It's not a 'thing', Allen, it's a baby."

"What do you mean by 'baby'?" My breath hitched in my throat. I was scared of the answer. How could there be a baby inside of me?

"It means exactly what it sounds like it means. You're twenty two weeks pregnant."