A few things before we get started, I tweaked the timeline of D. Gray-Man a bit:

1. Lavi's hammer was fixed immediately after returning from the Ark.
2. Everyone who was injured in the Noah's Ark Arc (i.e. Krory and Lenalee) have recovered.
3. This story starts in after Noah's Ark and before the Invasion of the Black Order

It was a night like no other at the Black Order that changed the entire fate of humanity. A certain white haired exorcist by the name Allen Walker was sitting in the White Ark, having a rather…interesting conversation with his adoptive uncle, Neah.

"I can't take this anymore, Neah," Allen complained, sitting at the piano with his back to his uncle. "I'm followed wherever I go, like some damn convict. I can't even go to the bathroom without Link trailing behind!"

Neah shrugged. "I would say to endure it and see what happens, but it seems like things won't be changing any time soon, nephew."

The younger male sighed and leaned on the white piano, resting his face in his arms. "You're right, things won't be changing. I've stopped moving. I promised Mana that I would keep walking, but now I can't even go anywhere." He sighed again. "Maybe it's finally time to leave."

Things had changed for Allen after they had returned from the Ark. Now that more than half of the European Branch and turned on him, he now saw how truly fickle and close-minded they really were, underneath all the smiles and lies. He was starting to question whether these people, these…humans were really worth saving.

It was around then the Neah began to speak with him.

The Fourteenth told Allen everything about him, his relationship with the Noah Clan, what occurred 35 years ago, and his relationship with Mana. After getting over the initial shock, Allen began to confide in Neah, telling him about his doubts, and his fears. To which Neah replied, "If they treat you like this now, after all that you';ve done for them, then they were never worth saving in the first place."

And that's when Allen made the decision the abandon the Order. He just didn't know how or when.

Neah's eyes softened and he went to sit next to his nephew. "Allen, you've been putting this off for ages now, if you want to leave, then leave."

Allen frowned and turned to face Neah. "I wish it were that easy, Uncle. If I use the Ark inside the Order, Rouvelier will be alerted immediately." Then he looked down. "I could just destroy the gates that were tapped, but even then it's risky. So many things could go wrong."

Suddenly, Allen felt a presence in his room, so he excused himself from Neah to leave the Ark and see exactly who it was that entered his room unbidden. When he peeked out of the large gate, he saw Tyki Mikk sitting on his bed with a cigarette in his mouth, dressed in his typical dress shirt and black trousers.

When he noticed Allen enter the bedroom, Tyki turned to him and smirked, while puffing out a huff of smoke. "Good evening, shounen. What seems to be troubling you?"

Allen sighed when he saw the Portuguese Noah on his bed, and walked over to him. He plucked the cigarette out of Tyki's mouth and stomped it out, scowling at him.

"You really shouldn't smoke those so much," Allen scolded lightly. "You know they're bad for you, Tyki."

Tyki scoffed and pulled Allen down so the white-haired teen was sitting next to him. "You know as well as anyone that such trivial ailments don't affect me. But you're changing the subject, shounen. What's bothering you?"

Allen didn't answer at first; instead he scooted over to seat himself on Tyki's lap, and buried his face in his neck. Tyki wrapped his arms around his young lover and waited for his response.

Tyki and Allen had been seeing each other in secret for a while now, sometime after they met on the train. After the whole fiasco with Krory, Allen managed to track the Noah down, and they talked for a long while, which somehow ended with the both of them kissing sweetly. Feeling guilty afterwards, Tyki confessed to Allen exactly what he was, to which Allen responded "Well, we'll just have to keep this our little secret then."

After a minute, Allen finally said, "I was talking to Uncle Neah about some things. He thinks it's time that I finally leave this place."

Tyki ran his hand through Allen's hair and raised an eyebrow. "I've been telling you that for a while now. What's changed you mind?" he asked.

Allen scowled lightly at the I-told-you-so, and smacked Tyki's hand away from his hair. "Stupid Tyki. I can't…be here anymore. I can't move forward, trying to protect the people who I now see were destined to die from the start." He looked down at his deformed left hand and stared at the small glowing green cross with disdain. "It might be this Innocence that's keeping me here. It really is ironic that the thing I hate most now is the thing that's keeping me alive."

Tyki waved a hand arbitrarily at that. "Innocence is something that is easily dealt with. There's something else stopping you. Is it those friends of yours; the samurai, the Bookman Junior, and the Heart girl?"

Allen 'hmphed' at the mention of them. "Lenalee and Kanda? They were good friends for a time…or at least Lenalee was. Now…maybe I'll take a page from Road's book and turn them both into dolls," he said with a small grin.

Tyki chuckled; he had recently found out that his shounen possessed a sadistic streak not unlike the Noah of Dreams'. "And what of the Junior Bookman; Lavi wasn't it?"

Allen laughed. "Ah, funny, that. He's actually the only person I trust around here, seeing as he's in a 'similar' position that I'm in." At Tyki's confused look, he continued, "Lavi's been seeing Road for quite a while, since after our time in the Ark." Thinking about their fight in the Ark made Allen frown, remembering the pain that he had put Tyki through.

Tyki saw the look on Allen's face and frowned as well. He took Allen's chin gently and tilted his head up so silver eyes met gold.

"Shounen, you did what you had to do. Besides, you can consider that payback for my almost killing you," he said, trying to lighten the tension.

It worked. Allen snickered and poked Tyki in the spot where his scar was. "I suppose so." Then he smiled at the Portuguese man. "Thank you Tyki, for making me feel better."

Tyki smirked and gripped Allen's chin tighter and grabbed his hip, pulling him closer so they were chest to chest. He looked down with such a loving expression that it made Allen's breath catch for a second. "Anything for you, Allen," he whispered, and then pulled the teen in for a soft kiss.

Allen leaned into the kiss and wrapped his arms around Tyki's neck. The Noah of Pleasure bit lightly on Allen's bottom lip, making the teen gasp quietly. Tyki took the opportunity to gently slide his tongue against the younger's, prompting a moan from Allen. That little moan made Tyki smile, and he pushed Allen on his back and started to kiss and bite his neck.

"Ah…," Allen whined, grabbing onto the Portuguese Man's shirt. "Tyki…"

Suddenly, a load knock sounded on the door, causing the two to freeze. "Walker?" It was Link. "I heard voices; is someone in there with you?"

Allen immediately pushed Tyki off of him, and Tyki phased out of the room just as Link entered the room.

Allen tilted his head innocently and smiled amicably. "Link? Is something wrong?"

The inspector narrowed his eyes and looked around, then looked back at Allen. "Who were you talking to just now?"

"Timcanpy," the white haired teen lied, and pointed to where his golden golem was stationed, his wings fluttering idly.

Link raised an eyebrow. "Were you now?" He looked around the room a bit more, then bent down to pick up Tyki's cigarette that Allen had stamped out earlier. "I didn't know you smoked, Walker. Who's cigarette is this?"

Allen responded easily. "Master Cross used to throw his used cigarettes in my clothes all the time. I'm not surprised that there are still a few around."

The blond man gave Allen a scrutinizing look for a few moments longer, before sighing. "Go to bed," he said dismissively, and exited the room.

After Link closed the door, Tyki re-entered the room and sat back down on the bed. "Shounen, this has to end. I'm feeling deprived, in more ways than one," he whined.

Allen threw his pillow at him in aggravation. "Well, what do you want me to do about it? It's not like I can just up and leave."

Tyki sighed, and then sat up as if suddenly remembering something important. "Actually, shounen, there may be a way we canget you out of here. Tonight."

Allen was immediately intrigued and sat beside Tyki expectantly. "Explain."

The Noah of Pleasure proceeded to do so. "I can use my power to get you out the same way that I got in, and then have Road open the door to get us both out," he explained with a grin.

Allen tilted his head in thought. "That sounds possible in theory. I could just use Neah's Ark, but they have a tracking alarm around here. If I open a gate without permission, I'll be immediately caught." He looked up at Tyki then, a sort of pleading yet questioning look on his face. "And you're sure that this will work?"

Tyki smirked and he held out his hand to Allen. "We won't know unless we try. Shall we tempt fate, shounen?"

The younger still looked a bit apprehensive, but smiled, and took the offered hand. "I believe we shall, milord~." Allen then turned to Timcanpy, who was sitting on the windowsill. "Tim, I'm leaving. You know what to do."

The golden golem fluttered his wings in response.

Outside the Black Order castle, hand in hand, Tyki and Allen appeared and Allen looked around. "It's actually been a while since I've been outside of the castle. I've been under so much surveillance that walks have become more of a twisted reward than a luxury."

Tyki frowned at that, but before he could respond, a red and black checkered door appeared before them. However, instead of Road bounding out the door, the one who stepped out was none other than the Earl of the Millennium himself.

"E-Earl!" Allen stammered out in surprise, and hid behind Tyki without thinking.

Tyki laughed a bit at Allen's actions, and tipped his top hat to the Earl. "Well, what a pleasant surprise, Lord Millennium, good evening. What brings you here this evening?"

"Ah, good evening to you too, Tyki-pon~," the Earl greeted, then looked behind Tyki to glance at Allen. "And to you as well, Allen Walker. I'm here because Road told me a new member of the family is joining us, so I decided to come in her stead~."

Allen peeked from behind Tyki in interest, his fear of the Earl beginning to fade. "She...told you…?"

The Earl nodded and his impossibly large grin seemed to grow wider. "She did~. Road told me all about you, and a few things about the Bookman Junior as well. I must say, I was quite surprised to hear all those things, so I simply had to come see for myself~."

The white haired teen moved from behind Tyki then, and stood nervously before the Earl. He steeled away his nerves, and then looked up at the patriarch of the Noah Clan confidently. "If you'll have me, I would like to join your family…Lord Millennium."

The Earl looked down at him for a few moments, and Allen was afraid he would be rejected and killed on the spot. However, he was surprised when the Earl crouched down to his height and placed a hand on his head, ruffling his white locks a bit.

"Allen-kun," the Earl said, and Allen was surprised to hear an almost gentle tone coming from him. "You don't have to ask to be a part of our family. We will gladly accept you with open arms."

Allen's eyes widened, and out of nowhere a single tear ran down the side of his face. Startled, he raised a hand to his cheek, and was surprised to see wetness on his hand. A few more tears followed after the first, and Allen began to sob. "Eh? Why…? I'm happy, so…why are there tears…?"

Tyki and the Earl's eyes softened in understanding. Allen's inner Noah was crying tears of happiness, at the joy of finally being reunited with his true family. The Earl gently pulled Allen in a gentle embrace, and Allen was stunningly reminded of all the times he was hugged by Mana.

Without even thinking, the teen wrapped his arms around the Earl, crying into his chest and leaving tear marks on the Noah patriarch's clothes. They stayed like this for a few moments before Allen's tears stopped and he pulled away, wiping his face quickly in embarrassment.

"Sorry…" he murmured. "I don't know what came over me."

"No need to apologize, Allen-kun~! We're family, after all~," the Earl said, and gestured to the open door behind them. "Well then, shall we? The time has come to meet the rest of your true family~."

Allen smiled and nodded. "Yes, Lord Millennium."

The Earl clapped and turned to the door, walking away. "Excellent! Well, come along then! You too, Tyki-pon~!"

Allen snickered at the nickname, and Tyki scowled, flicking the teen's forehead gently. "Hush, shounen."

He looked up at his lover and grinned cheekily. "Alright, Tyki-pon~."

Tyki grumbled and all but stomped toward the door, a laughing Allen trailing behind.

And that meeting, that night was what sealed humanity's fate. The fate of certain death.