A/N: So just a warning, this is an Mpreg, so if that is not your thing you have been warned! It is also yaoi, which typically goes hand in hand with mpreg but I thought I'd warn you anyway. This story is also unbeta'd.

I kept a few minor cannon things, but for the most part this is largely an AU. They are still shinobi of course, but I have changed many of the character's ages in relation to one another, as well as some of the history of some of the characters, including how some of them died. So I just thought I'd give you a head's up about that.

Anyway I shall stop rambling now, and I just hope you will enjoy!

Kakashi sighed, waiting in the exam room for Lady Tsunade to return. He hated having physicals, but it was a required part of being an active shinobi in Konoha. They were all required to get complete physicals once a year, whether they were injured, ill or not.

The silver-haired ninja dreaded this day every year, and even tried to get out of it a few times. But he was always cornered and scolded by Lady Tsunade, the head of the medical core. She was one of the legendary Sannin, and could be extremely scary when she wanted to be, so even though he hated the physicals, he hated the idea of being beaten by the blonde medical-nin even more.

It wasn't the physicals themselves that he hated, he just happened to not be overly fond of needles…not that he would ever admit that to anyone. He was Kakashi Hatake after all, the great copy-ninja, he would never live it down if anyone found out he was afraid of something silly like needles.

Kakashi sighed, growing impatient. What was taking Lady Tsunade so long? Today of all days he didn't want to be stuck in a hospital room. Today happened to be his 25th birthday and all he wanted to do was get out of there so he could begin drinking the night away.

It was a birthday tradition that he had had every since he was legally allowed to drink. He would have dinner with his former sensei, Minato the current Hokage, and his wife and son, and then he would hit the bar and begin a night of drinking, and if he was lucky, hooking up with someone. Kakashi would skip the dinner altogether if he could and just get straight to the drinking, but Kushina would never allow it. She insisted that a birthday was something to celebrate with people that cared about you. Which was exactly why Kakashi hated celebrating it in the first place, it just reminded him of all the people that he had loved that he had lost; his mother, father, and his two teammates and closest friends Rin and Obito. To him his birthday wasn't something to celebrate, but an excuse to drink his face off and forget the pain he felt for those he lost. Although he did care about Minato and Kushina, so he indulged them every year by allowing them to have him over for dinner.

"Alright brat, your almost free to go." Lady Tsunade said coming back into the room. "I just have to give you your booster shot."

"Are you sure you have to? I mean I feel healthy enough without it." Kakashi shuddered seeing the size of needle the blonde pulled out.

"Awww, is the big bad copy-nin scared?" Tsunade mocked.

"I'm not scared…but like I said, I'm perfectly healthy without this vitamin shot. Why don't you just save that for the next per- OWW! What the hell you evil bitch!" Kakashi hissed, grabbing his arm where the blonde had just jabbed the needle in. "You didn't even give me any warning!"

"Oh man up! Like warning you would have made a difference. You would have just run away. And what the hell did you just call me?" The older woman hissed, glaring at him.

"Umm…I said you were a…extremely talented medical ninja…"

"Yeah because that sounded so close to evil bitch…get out of here brat before I decide to give you another shot."

"Yes ma'am," Kakashi said, rushing out of the room as quickly as he could, before the blonde could change her mind.

Tsunade shook her head at the retreating ninja; Kakashi was always her worst patient. Every year she had to force him to get his physical, and whenever he was injured on duty, he never listened to her instructions to take it easy, and he always ended up making his injuries worse. But despite how difficult he was, she still had a soft spot for the copy-nin. She knew of his past and could sympathize, having lost the two people closest to her as well. But unlike him she had been able to move on and find happiness again, and she was now married to her former teammate Jiraya. She wished that one day maybe Kakashi would be able to find happiness again as well.

"Happy birthday brat," Tsunade mumbled under her breath, smiling despite herself.

"Lady Tsunade?" A voice came from the doorway, interrupting her train of thought.

"Yes, what is it Shizune?" The blonde woman sighed looking up at her assistant.

"You haven't seen that vile of that new drug we've been working on have you? I could have sworn we had left it in the store room but I can't find it anywhere."

The older woman thought for a moment, trying to remember the last time she had seen it. She was just in the storeroom to get the vitamin booster shot to give to Kakashi, and she could have sworn she had seen it then. She looked down at the empty booster vile in her hand, her eyes widening in shock.

"Oh shit…"

"Oh no, you didn't."

"Let's not panic…I can't imagine the drug would have any effect what so ever. It was still experimental after all."

"But still, if you accidently gave it to someone, shouldn't we bring them in to run some tests to make sure?"

Tsunade bit her lip in contemplation, a part of her thinking that they probably should bring Kakashi back in to run some tests, but on the other hand it was his birthday, a difficult enough day for the copy-nin, she didn't want to make it any worse. And besides, given what the drug was being developed for, she couldn't see it having any effect what so ever on Kakashi anyway.

"No, I believe it will be okay for tonight. I wouldn't worry about it Shizune."

"But milady…"

"I said don't worry about it." The blonde snapped, silencing her assistant immediately.

"Of course, whatever you say."

Tsunade sighed again as Shizune left the room, the blonde looking back down at the vile in her hand. Or at least she hoped that it was nothing to worry about…

~Break~

"Thank you so much for dinner Kushina, it was delicious as usual." The silver-haired ninja thanked the redheaded woman, as she began clearing all the dishes.

"Of course dear, it was my pleasure." Kushina replied kindly, smiling softly at the copy-nin.

"Is it dessert time mommy!?" The small yellow haired child asked excitedly from his spot next to Kakashi.

"Hold your horses dear, I have to clean up the mess from supper first," Kushina laughed at her now pouting four year old son. "I know, why don't you help me clean up so we can have dessert even sooner?"

"That sounds like a good idea to me little man," Minato chimed in, giving Naruto a look that said 'don't argue with me'.

"Fine!" The four year old sighed dramatically waving his arms before following after his mother into the kitchen. Which just left the two men sitting at the table.

"How are you doing Kakashi?" Minato asked once the two of them were alone.

"Like I told you guys earlier, I'm fine." Kakashi answered, not looking up at his former sensei. He found it hard to lie to the man that he almost looked up to like a father, but he really didn't want to get into things now.

He hated talking about his feelings and about the past, especially on his birthday. It use to be a day that he looked forward to as a kid, because every year his father would take him out on a little trip, and they would do some sort of activity just the two of them. One year they would go fishing, the next year camping, and so on. But then his mother had fallen ill and eventually passed away, of all days, on his birthday.

Kakashi had been so heart broken about his mother's death, but what broke his heart even more was how his father completely withdrew from life after her death. He became so closed off and cold, it was almost like he had lost his father as well. Things had only gotten worse from there when his father began drinking. He became an alcoholic and had gotten himself killed on a mission because he had been drunk.

Despite all the heartbreak he had suffered as a child, he actually managed to find some joy in his life again. When he had officially become a shinobi, and joined his team, he found two friends that he had grown incredibly close to. They became almost like siblings to him, and their team leader Minato became like a father. It was like he had gotten a second chance at having a family.

But then the unthinkable happened. First they lost Obito on a mission, who had sacrificed himself to save Rin and himself. The incident had left Kakashi very shaken, and he grew very unsure of himself as a shinobi. He felt like there should have been more that he could have done to save his teammate. He blamed himself for Obito's death, even though Rin had assured him that it wasn't his fault.

While mourning Obito's death, Kakashi and Rin had grown even closer. The two of them became inseparable, Kakashi always wanting her in his sight so he could protect her. He even developed feelings for her beyond friendship, which only made her eventual death that much more devastating for him.

The two of them had been out for a walk in the forest outside of Konoha, when a group of enemy shinobi had attacked them out of nowhere. They were outnumbered 10 to 2, but together they had manage to take down more then half of them, when Kakashi had slipped up because he was too busy worrying about Rin, that he let himself get distracted and an enemy had attacked him from behind.

He would have been killed if it wasn't for Rin, who had managed to push him out of the way. Unfortunately she wasn't able to avoid the attack as well and she was killed instantly. Kakashi had gone numb, not able to believe what had happened, and he surely would've been killed as well if reinforcements hadn't shown up that instant.

And ever since that day Kakashi completely withdrew from life, and buried all his feelings as far inside himself as possible. It had taken all his strength and will not to end his own life, and instead he had completely thrown himself into training and missions.

It was years before he was able to open up ever so slightly and let his former sensei and his wife back into his life. But even now, years later, he still kept a wall up around himself, not wanting anyone to get too close to him, knowing that he wouldn't be able to handle losing yet another person in his life. So even though he cared for Minato, Kushina, and little Naruto, he still kept a good amount of distance from them just in case.

"I know you said your fine, but you know you can always talk to me if you need to." Minato sighed, frustrated knowing how his former student must be feeling, but knowing there was nothing he could really do about it. All he could do was keep letting the younger man know that he was there for him.

"I know…thanks sensei." Kakashi answered, trying his best to put on a convincing smile.

"Kakashi-san! Kakashi-san!" An excited Naruto kept shouting as he ran full speed back into the dinning room. He would have run right into Kakashi if it hadn't been for the silver-haired ninja's quick reflexes. He grabbed the small blonde boy, picking him up and putting him on his lap.

"What's up little man?" Kakashi asked the visibly excited boy.

"I made this for you!" Naruto said happily, shoving a piece of paper into the jounin's hands.

Kakashi looked down at the paper, and smiled sadly when he saw it. It was a picture Naruto had obviously drawn of Minato, Kushina, Naruto, and himself. They were all standing together holding hands in the picture, and written above the image was the word 'family'.

"Thank you Naruto, that was very nice of you."

"Do you like it?!" The blonde boy asked with such hope in his voice.

"I love it." Kakashi answered, accepting a hug from the boy.

The gesture had been sweet, but if Kakashi was being honest, seeing the picture had upset him more than it had comforted him. I just reminded him that he didn't have a real family of his own.

"Who's ready for cake?" Kushina asked, bringing in the dessert, saving Kakashi from having to say anything more about the picture.

"I am! I am!" Naruto yelled, jumping off Kakashi's lap and hurrying to sit back down in his seat.

The rest of the night passed by quickly, after the cake was finished, Naruto was put to bed, despite his arguments, and after thanking Minato and Kushina once again for everything, Kakashi's real celebration could get started.

He found the closest bar that he could and ordered several drinks, downing them all one after another, until he could feel the familiar tingly in his limbs and warmth in his belly. He ordered another round, doing the same thing. It didn't take long for him to reach the pleasant level of drunkenness where he was able to forget his pain.

Once he was thoroughly hammered, he turned away from the bar, scanning the crowd of people, trying to find a suitable candidate to accompany him to bed that night.

He saw several attractive women, or at least they appeared attractive in his drunken haze, when his eyes landed on someone that instantly caught his attention. Brown hair, tanned skin, Kakashi liked what he saw...

The only problem was that the individual was a man, which would make Kakashi's job of 'wooing' him that much harder. Kakashi didn't usually go for men over women, mainly because most of the men in the village were straight so it was a lot harder to find one willing to sleep with, whereas all he had to do was approach any woman and he was pretty much guaranteed to get them into bed. He was Kakashi Hatake after all, the legendary copy-nin, women all but threw themselves at him. But in the end he was attracted to both men and women, although he did try to keep a low profile when it came to the former.

However with the mood he was currently in, and the amount of booze in his system giving him courage, he was determined to make the man across the bar his. He took one last shot, before he made his way across the room.

~Break~

Kakashi woke up with a groan, instantly feeling an intense pounding in his head. He tried to sit up, but instantly regretted it as the room began to spin around and a wave of nausea washed over him.

"Shit…" The silver-haired male muttered, squeezing his eyes shut in hopes that the room would stop moving and return to normal, but it seemed to be pointless. Eventually he decided to get up whether the room was going to stop spinning or not.

But as soon as he stood up, he felt a sharp pain in his backside, causing him to let out another groan.

"What the hell…" Kakashi hissed, trying to rub the pain away to no avail. He couldn't quite put his finger on what the pain could possibly be from, when the previous nights events slowly started to come back to him.

He remembered the bar, the sake, and then the man that had caught his attention. He looked around his bedroom and could see clear signs of what must have happened last night. His clothes were scattered all over the floor, and there was a bottle of lube still sitting out on his bedside table.

The man in question was nowhere to be found though; he must have left earlier before Kakashi could wake up.

Kakashi sighed, it was probably better that way. Waking up with someone after a drunken one-night stand was always a little awkward. But Kakashi couldn't help but feel slightly hurt by it anyways. It was usually him leaving before the woman could wake up, or kicking them out first thing in the morning, he had never actually experienced being on the other end of that, especially after bottoming.

He winced when he felt another sharp pain in his backside. He couldn't believe he had actually allowed some random guy at the bar to top him. In all the years that he had been sleeping with both men and women, he had never been the bottom.

Maybe this was karmic justice, him being fucked and chucked, just like he had done to a countless number of women and men over the years.

Kakashi groaned once again when the room began to spin. At this point he didn't even care what had happened last night. It was another perfect end to another perfect birthday. Maybe next years would be different…though that thought was almost laughable. Long ago Kakashi had decided to live a life of loneliness and solitude, and he couldn't imagine anything changing that.