Ah, ASV desu~ I'm really sorry for not updating 'Oh Boy!' in quite a while even though I promised you guys an update a few months ago. I had a major writer's block and it still hasn't gone away. Not only that, while I was struggling with the next chapter, One Piece went soooo far ahead that I lost hope… almost… TT~TT I'd love to continue 'Oh Boy', but it'll take some time… a lot of more time…

But enough about that! (Insert nervous laughter here) I present you another story of mine! But no, it's not One Piece! Instead it's… (Insert drum roll here) D. Gray Man!

Summary: Yuki's 9th birthday is here! Her papa's present is one wish! What's that? She wants to know how Papa and Otou-san were like before they had her! Papa grants her wish and off she goes to experience Allen and Kanda's life in the past! OC, Yullen, Yaoi, hints of mpreg, etc. ^o^

Disclaimer: I do not own D. Gray Man. However, I do own Yuki-chan~ and some posters, badges, and pins of D. Gray Man! :3

Whoot! Hope you enjoy this! ^-^

Happy Birthday: Prologue

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"Happy Birthday to you,

Happy Birthday to you!

Happy Birthday Dear Yuki…

Happy Birthday to you!"

Papa cheered and clapped, encouraging her to blow out the candles, "C'mon Yuki-chan! You're nine today, so blow out all of the candles!" Then he gave a look at her father, "Neh, Yuu, you should join us too!"

The long blue-haired man merely gave her papa a small glare, murmuring something like, "Baka Moyashi…" before giving Yuki a small smile, "Happy Birthday, Yuki-chan."

She grinned enthusiastically, "Thank you, Otou-san!" She jumped up and tackled her father, who caught her and hugged her. She gave him a big kiss on the cheek before bouncing to her papa, "Thank you Papa!" She also gave her papa a big kiss on the cheek.

The white-haired man smiled broadly, looking a little teary, "Ah, my Yuki-chan. All grown up…" He hugged her tightly, but still gently, giving her a kiss on the forehead.

She giggled, but suddenly remembered something, "Ah! Otou-san, Papa," she wiggled out of her papa's embrace, "What about my presents?" She gave her best puppy-eyes towards her blue-haired father.

Her father blinked, eventually giving in, "Here," He replied gently, handing her a small package.

Thrilled about receiving a present from her father, she immediately unwrapped the package as fast as she can, but still in a neat manner, "Wa~," Her eyes widened as she dangled the necklace in front of her, "So pretty~." She turned to her father, "Thank you Otou-san!" She gave him another big hug.

"Your welcome; now let me help you put that on." Yuu replied gently. Yuki nodded and turned around, waiting for her father to put the necklace on her.

The pretty sea blue necklace that was in a shape of a lotus flower was clasped on, allowing Yuki to look down at her neck, admiring the beautiful necklace. "Thank you, Otou-san," She whispered, still in awe of the necklace's beauty.

Yuu nodded, "Take good care of that necklace, Yuki-chan. It's been passed down my family for generations, and I want you to have it. Think of it as a talisman that will protect you when Papa or I'm not around, alright?"

Yuki nodded enthusiastically, "I will, Otou-san! I will take care of it, I will!" She giggled, looking at her papa now. "Papa," she sat on his lap suddenly, "What did you get me?"

Allen blinked twice before grinning sheepishly, scratching his head, "Well…" He trailed off, and then he suddenly looked like he had a great idea, "I know! My present to you is one wish!" Yuu looked like he wanted to slap Allen.

Yuki blinked, tilted her head slightly in confusion, "A wish?" she repeated.

"Hai," Her papa replied cheerfully, "A wish! Anything you want, I will grant you it!"

Yuki took a few seconds to process that in her head, but soon got excited, "Really!?" She asked, "Really!?"

Allen nodded proudly, "Yup! I'll grant you one wish, so Yuki-chan… do you know what you want?" He glanced at her father and gave him a smug smirk before turning to look at her again. Yuu merely scowled, still thinking that his necklace gift was better than granting a wish.

Yuki closed her eyes, but soon opened them again, "But Papa, I already made a wish when I blew out the candles," She whined, "If I tell you my wish, it won't come true!"

Allen's eyes widened, his perfect gift crushed. But he tried to pick up the pieces by saying, "No, no, Yuki-chan! That wish will be granted, but I want you to tell me another wish that I can grant for you so that you can have two wishes granted! Doesn't that sound better than just one wish?"

Yuki nodded, her head bobbing up and down. "Yeah!" She cheered, "I get two wishes!" She began bouncing on her papa's lap, getting really excited.

"Ah, ah," Allen wiggled his finger in front of her face, "Before you get all excited, why don't you tell me your wish? You better think and make sure it's really something you want."

"Hai!" Yuki replied, squeezing her eyes shut as she tried to think of something to wish for. 'What do I want?' she wondered, 'What do I really want?' She suddenly opened her eyes, "I know! Papa, I want to know how you and Otou-san were like before you had me!" She grinned, looking proud of her wish.

Yuu almost dropped the cup of tea that he had been drinking, spluttering, "N-n-nani!?" He gasped, looking wide-eyed at Yuki before glaring at Allen to not tell Yuki anything.

Allen had also looked surprised, but he grinned thoughtfully, "Ah, that's a nice wish, Yuki-chan. Do you want to know right now?"

Yuki nodded, "Yes! I want to know all about Papa and Otou-san!"

"Rather than just telling you a boring story, why don't you see the past for yourself?" Allen suggested slyly.

"What a great idea, Papa!" She cheered, "Hai! Send me back to the past!" She giggled, getting off his lap and dancing around the table, singing, "I'm going back to the past~ I'm going back to the past~"

Yuu got up and grabbed Allen by the collar of his shirt, "You're not serious, right Moyashi?" He glared at his lover.

Allen shrugged, "My name is Allen, BaKanda, not Moyashi. And why yes, I'm serious. This would be a great experience for her and she does want to know more about us, doesn't she? Besides," He dropped to a whisper so that Yuki couldn't hear them, "She'll be gone for a few days and we'd," He trailed a finger on Kanda's chest, "get the whole place to ourselves."

Yuu gulped slightly, mentally cursing his lover for knowing his weakness. He sighed, giving in and letting go of Allen's shirt. He turned to Yuki, "I'll allow this," He announced, "But you have to promise me to stay out of harm's way, alright Yuki-chan?"

Yuki stopped dancing around the table and nodded enthusiastically once again as she replied, "Hai, Otou-san! I promise!" She ran over to both of her dads and hugged them at the same time to the best of her abilities as a small child. "So, do I go now?" She looked up innocently at them.

"Yes, now." Allen replied as opened his hand, revealing a black smaller version of Timcampy, "This is Palma," He explained as the small round thing opened its wings and started to fly around Yuki, "You can contact us through her only when you really need to or when you want to come home, alright? She'll also tell us how you're doing so we won't be worried."

Yuki giggled as she poked Palma, "She's cute!" She stopped Palma from flying by grabbing one of her wings, but soon let go when the black golem bit her, "Itai!" She yelped, immediately trying to nurse her injured finger.

Allen merely laughed, "Treat Palma with kindness, okay?" He gave her a kiss on the forehead before he waved a hand over her head.

"Okay!!" Yuki replied as she nodded, holding onto Palma more gently this time. A bright green light began glowing around her and she knew that her papa was sending her back to the past, "Bye Papa! Bye Otou-san! I'll be on my best behavior so don't worry about me!" She waved to them before the light swallowed her.

"Have fun," Allen merrily waved, his last words were the last she heard before she disappeared. He turned to Kanda, looking teary again, "Our baby's all grown up." He sniffed.

Kanda just rolled his eyes, "She'll be fine. She better be," He replied in a tone that ensured Allen pain if she didn't come back safely.

"Hai," Allen replied, returning the eye roll. He knew his girl and he knew she'll be alright. "But rather than worrying about our baby who'll do fine with our past selves," He dropped his voice into a low, seductive voice, "Why don't you start worrying about us right now?" He leaned in for a kiss, closing his eyes.

Kanda did the same, but for a few seconds, he felt nothing. He opened his eyes, seeing Allen grinning and walking out of the dining room and towards their bedroom. "Moyashi," He growled as he followed the laughing, but inviting white-haired man he calls his lover.

Happy Birthday indeed…

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Ah, that was hard, ^^'… short, but hard. I hope you guys don't mind having an OC going back into the past to experience her parent's life as exorcists. I know she's only nine and all, but then again, she is the daughter of Allen and Kanda if you hadn't noticed that yet. (And if you hadn't noticed, Allen is Papa while Kanda is Otou-san. I was going to have Yuki call Allen 'Mama', but I realized that Allen wouldn't appreciate that even if he's the uke. XD)

And I know, Allen and Kanda seem OOC, but then again, who knows how they're like in the future when they have a kid? :P (Besides, I fail at portraying them as lovers D:)

As for Allen's sudden ability to send someone back into time? That will be revealed in time… Hehe, I sound evil, don't I? Don't worry, this won't be so boring. There'll twists and turns, humor, adventure, drama, mystery, yaoi, and plenty of more stuff that I'm cooking right now!

Let's not jinx myself and get another writer's block, alright? So please review and tell me what you thought of the prologue! I don't mind criticism! Flames, however, will… be used to burn my sister, not me! XD