Disclaimer: I do not own Detective Conan/KHR! Or the characters.

BAMF! Tsuna

AN: [shifts eye, posts new story, slinks away] – [slinks back in] Info will be at the end of the chapter so you could enjoy the story.

Blood Strangers

'Just why?' The boy thought to himself as he sunk further into his chair. 'What did I do to deserve such horrible luck? To be at the end of such –such irony?!'

The day started fairly normal. Wake up, get ready for school, and deal with the rest of the day. It was normal, of course, with a few yells and threats to friends, but still normal to the boy. Sawada Tsunayoshi had long dealt and embraced these actions, as they were now permanent in his life. But none of the daily occurrence was what left the brunet in such a state.

Oh no. It had all started with his caring, loving, sweet mother.

The boy had seen her going through old letters in the kitchen –ones that he presumed were from his father long ago. Getting closer, Tsuna tilted his head. Nice cursive writing printed the page neatly. That was certainly not his father's writing, considering that Iemitsu's was like chicken scratch. "Kaa-Chan?" Tsuna called out softly.

Even though he tried not to startle her, the poor woman jumped from her seat slightly. "Ara, Tsu-Kun. I didn't hear you come in. Are you hungry? Kaa-Chan can make you a snack if you are."

"Ah, n-no, I'm not really hungry." That was a lie, the boy did want to get something to munch on, only because he was stalling with his math homework. Instead, Tsuna shifted his eyes to the paper on the table and back to his mother. "Who were those from? They don't look like they're from Tou-San."

"Oh, these old things?" Nana giggled, picking up the object of the conversation. "These are from Yuki-Onee." She said, looking at the letters with nostalgia. Completely missing the confused expression from her son. "She hasn't sent a letter to me for about two years, and whenever I call, she seems to be busy escaping her husband's editors with him. That must be so romantic!"

Tsuna sweat-dropped, how could that be romantic? Taking a seat next to his bubbling mother, he turned his gaze back to the letters. "Ne, Kaa-Chan?" His mothered hummed, still in la-la land. "You sound really close to them. Should I know this 'Yuki-Onee' person?"

Nana blinked and turned to stare at her only son. "Hmm, well, now that I think about it. You were just a baby when I introduce you to her, only a few months old." Tapping her chin, she turned her gaze upward, thinking more about the question. "Yuki-Onee is my big sister –making her your Oba-San. Although, she doesn't like being called that for some strange reason."

Turning to stare at her son once more, Nana tilted her head. Tsuna had all but gapped at her in return. Mouth flopping open as he tried to say something. After a few seconds, he managed to gather himself, the teenager spluttered out a question. "I have an O-Oba-San?! Why didn't I know about this?"

His wonderful bubbling mother just smiled, clapping her hands as she let out a giggle. "Because Tsu-Kun didn't ask!" Nana continued to smile as Tsuna slammed his face onto the table.

"Kaa-Chan?" Tsuna called out once again, voice muffled from being pressed against the wood. "What's Oba-San's full name?"

"Yuki-Onee's full name is Kudo Yukiko." Clapping her hands onto her cheeks, Nana sighed wistfully. "Yuki-Onee has always been my role-model when we were kids –in fact, she still is! Even now, she's a well-known actress. Retired, true, but still well known!" Here, she sighed once again, brows furrowed. "It's no wonder why she hasn't been able to visit, being busy with the paparazzi and her own son." Son? So he had a cousin too? Talk about hardly knowing blood family.

Tsuna brows furrowed in thought, the surname repeated in his head. He was sure that he had heard of a 'Kudo' before. Picking himself off the table, the brunet looked towards his mother. "So, if I ever meet Oba-San, should I call her that or something else?"

"She seems to dislike being called that, so it's probably best that you call her 'Yukiko-Nee'." Nodding towards his mother, Tsuna did his best not to comment on how 'Yukiko-Nee' sounded rather vain. Of course, all the girls he's met seem to focus on their looks.

He didn't understand them, they were all pretty ladies to him. Perhaps it was society to blame? "Do you have any photos of Ob- uh, Y-Yukiko-Nee, Kaa-Chan?" Nana squealed out her answer, pulling out a few photos that came with the letters. Tsuna had wanted a distraction from homework, and he had gotten one from his mother.

After a few minutes –nearly twenty-five- Nana showed him the last photo, smiling softly. "This was taken the day I introduced you to her. You were tired and fell asleep in my arms. Yuki-Onee's son was the same way, I think he was with his father most of the day. If I remember correctly, her son should be one year old than you, Tsu-Kun."

Looking at the photo, the teenager didn't know how he should feel. Embarrassed or intrigued. Seriously, looking at themselves when they were a baby was just plain embarrassing. Pretending that the drooling baby in the photo wasn't him, Tsuna took the time to look at the other two strangers in it. Yukiko-Nee was taller than his own mother, at least by a head –'Maybe she's wearing high heels?'- But she was still pretty.

Long curly hair contradicted from his mother's long straight hair. Their noses were the same, along with the chin shape, but everything else was different. While his mother still gave off the feeling of bubbling, happy, and oblivious nature in the photo, the other woman was completely different. Just from looking at it, Tsuna had the idea of her being mischievous, smart, and childish. Strange, considering he doesn't remember her at all.

The boy in Yukiko-Nee's hands was obviously taller than him, even in the woman's arms. He was dressed in fancy clothing, for a one year old, that is. Tsuna wondered, briefly, if his cousin found the clothes comfortable to sleep in before shaking his thoughts onto other matters. "Kaa-Chan? Is it okay if I keep this photo?" He asked, eyes never leaving said object.

"Of course! But make sure to take care of it, alright?" Nodding his head, Nana hummed happily as she went back to cleaning up the table. "Tsu-Kun? Shouldn't you be doing your homework?"

Blinking, Tsuna stared. Oh, right. "R-Right, I almost forgot about it." He had forgotten about that. "Thanks for the photo, Kaa-Chan. I'll go finish my homework." Getting off the seat, Tsuna made his way back upstairs. The brunet couldn't help but look at the photo once more. He knew he hasn't met them beside when he was a baby, but the Mafia boss was sure that he had seen them somewhere.

Well, not them per say, it was just their name that he kept seeing. It popped up in the news every now and then. Not to mention, a few high-schools would gossip about a 'Kudo' at the times he would see the name. Tsuna frowned, highly confused about the useless information –or lack of- that kept running around his head. Sighing to himself, the boy placed the photo next to his desk light. The sooner he could get through with his homework, the faster he could gather more information.

An hour later, Tsuna was on his laptop, looking for information based on his 'Yukiko-Nee'. There were a lot of things that popped up. Forums about how she was still talented and beautiful. Others raging about how she should or should not come back into acting. It was mainly people being jealous of her looks, as he came to realize after looking at a few of her modeling photos. 'Kaa-Chan wasn't kidding, she really is a big sister role-model.' Tsuna thought to himself. He paused for a moment, wondering if there was ever a time if his dear mother felt any bits of jealousy towards the other woman.

From what he had gathered –little as it may be- Yukiko-Nee seemed to have the perfect life. Once an actress and model, a wife to a famous writer, then a mother to a son living in a western like mansion. Along with the fact that Yukiko-Nee was always with her husband, even when dodging his editors. All the while, his mother didn't get to see Iemitsu for more than four days, before he takes off and doesn't show his face for another few years!

Tsuna lips pursed into the thin line; the thought left a sour taste in his mouth. Sure, he patched a few things with his father, but it didn't mean the brunet forgave him for the ridiculously long absence. Shaking his head, he went back to reading through articles for anything that could be useful.

Clicking on one absently, he wondered if he had passed by his cousin's information when looking for Yukiko-Nee's. Staring at his screen with a blank expression, Tsuna let the background noise of Lambo, I-pin, and Fuuta to fill in the silence. Scanning through the articles, taking in the grey-scaled photos of them, he stopped and stared at one in particular.

Blinking slowly and dread filling the pit of his stomach, Tsuna pulled himself closer to read what he had hoped to god was wrong. He gulped, eyes widening as he re-read the article once again. The words stared back, as if mocking his intelligence.

"Kudo Shinichi, Heisei Holmes, did it once again! Solving a homicide in a matter of hours, Kudo Shinichi shows his brilliance, even when the police were stumped!" Peeling himself away from the screen, Tsuna continued to read the next article. "The savior of the police force arrived on the scene of another homicide today-."

With growing horror to the realization that what he read wasn't wrong, Tsuna clicked on another article revolving around his cousin. "Kudo Shinichi strikes again, solving another difficult case!" Then another. "Kudo Shinichi has been called many things, but the new one spreading is 'Detective of the East'! This boy just won't stop!" And then another. "Detective at a young age, Kudo Shinichi is not one to be trifled!"

Tsuna was never one to ask why they would follow certain careers, nor was he one to ask them to stop chasing something they loved to do. By why, for the love of everything sane in the world, would his cousin want to ever be a detective?! A homicide one at that?! Covering his face with his hands, the brunet let out a muffled groan as he sunk into his chair.

Which brings us up-to-date.

"I can't believe this! As if being a Boss isn't bad enough, he's a detective?!" Tsuna muttered to himself, hands pressed against his face as he easily ignored how his voice pitch rose. "Seriously? What did I do to deserve this?" Giving a huff, the boy didn't move from his position. Letting the information settle in to his brain, the boy frowned.

Peeking through his fingers and staring at the laptop screen, his brows furrowed. The articles were rather old. Not five to ten years old, somewhere around a year or two. 'The same amount of years when Yukiko-Nee stopped writing letters to Kaa-Chan.' For a while, Tsuna was thinking that it was a coincidence, that his mind was playing tricks with him.

The gut feeling he had gotten used to told him otherwise. Pushing himself back up to a better position in his chair, the boy wasted no time clicking on the more recent articles of his cousin. A lot popped up, all by different reporters or writers, yet they were all the same. "Where did Kudo Shinichi go?" Letting himself lean back in his chair Tsuna let his mind wander.

Two years of Yukiko-Nee not writing to his mother. Two years of his supposable cousin disappearing. There was no way it could have been a coincidence, something had to have happened. 'Now, all I have to do is find something that has happened in the last two years.' Pinching the bridge of his nose, the boy mused if he had some ability that would allow him to be as good as a detective as the other.

A snort escaped his lips. "A Mafia Boss trying to be a detective. How hilarious." The sarcasm was strong that even he rolled his eyes. Pushing any thoughts of making snarky comments to himself, Tsuna went back onto his laptop, more determined to find out what was going on and find out what happened.

If you were to ask any of his classmates, they would have said that he was still 'Dame-Tsuna'. They didn't know how wrong they were. By all means, Tsuna wasn't a genius like Gokudera, but he wasn't dumb either. He knew all sorts of knowledge, strange and useless ones, but it was still knowledge. The only reason he scored so lowly was because either the teachers didn't like him, or he was far too tired to even try.

Other reasons is because he was just naturally too lazy to put in the effort for something he consider 'pointless.' Which was why his fellow classmates continued to gawk at him with confusion or some waiting for the brunet to explode. The days rolled by and Tsuna continued to search for more information. He had went around his school, asking about what they thought or heard about Kudo Shinichi and wrote notes in front of them.

Half the school waved it off, thinking he was just fan-boying over someone who was missing for two years too late. The other half were just a little more put off when he seemed to be in deep thought, eyes narrowed. A handful –his classmates- were down right terrified. One of the idiots that had tried to bully Tsuna the moment they entered high school tried to get a reaction from the brunet. Interrupting the boss in his thoughts only granted the bully a cold glare that caused the boy to stutter an apology.

Needless to say, no one else tried to bother him while he was thinking.

Another week passed by with him repeating the process of information collecting, and Tsuna finds himself back at his desk. Pursing his lips and tapping the end of his lead-pencil on his chin, Tsuna hummed aloud as he continued to look down at his notes. The sky wielder had gotten more information from the articles, his classmates, and his sources from his job.

Kudo Shinichi was last seen two years ago at an amusement park and solved –'Oh, would you like at that, another one!'- a homicide. That exact date, a boy by the name of Edogawa Conan shows up –'who, by all means, seem to just pop up from out of nowhere.'- who lives with the Mouri's. Which followed up with the sudden rise of one Mouri Kogoro. Either Kawahira got back the Tri-ni-set or there was something else going on. Again.

Tsuna sighed, placing his pencil down, and rubbed his forehead. Already feeling a headache coming on. It was official, his whole family had to be cursed. There was no other explanation for it otherwise! Kudo Shinichi would always 'stumble' across a case just as much as Tsuna would trip over nothing. And that was saying something.

'Honestly, it's like we can't have a normal life.' Mentally sobbing at the loss of whatever could be considered normal, the sky remained silent. Carding his hand through the mess that he called his hair, he continued to remain quiet as he stared at his ceiling, mind whirling around with the information.

Kudo Shinichi –his cousin- disappeared, yet another person showed up in his place: Edogawa Conan. The elementary student had been in multiple reports, either from being involved with cases, chasing down an odd thief, or being in cases with the 'Detective Boys'. While all those news articles were scattered, it was clear that he stumbled across as many cases as his 'missing' cousin.

And then there was Mouri Kogoro aka the Sleeping Sleuth. Before Edogawa showed up, his sources pointed out that the man was pretty much an 'idiot who drank, gambled, and gawked at woman like a very idiotic man'. Their words, not his. As unorthodox as his informant had been, it was enough for him to know that Mouri-San had started to become acquaintances of stumbling into cases here and there nowadays.

Strange, considering that it started to happen when Edogawa showed up to live with them. Tsuna was still confused about the situation. There was a chance that Kawahira could have gotten the Tri-ni-set back, but he also knew that the man wouldn't do such a thing. Along with the fact that Edogawa's papers were completely fake. He, along with his friends and informants, knew when they were looking at fake papers. That didn't stop him from wondering.

Opening his eyes –'Eh? When did I close them?'- Tsuna turned his attention to the other in the room. "Reborn?" The hitman paused in polishing his gun to stare back, his black eyes meeting his own. The boy did his best to not shudder. When Reborn had been a baby, he was scary. As a seven year old now, he was just terrifying. "I was wondering, do you know of anyone else turning into children? Not like babies from your old curse, just, I guess like the physical age you're now?"

An elegant brow raised, Reborn tilted his head, his wild raven hair falling along with his movement. "Of course not. The curse was broken two years ago with your idea, so no one else should be reduced to a baby." The blunt reply almost knocked Tsuna off his seat.

Chuckling uneasily, Tsuna rubbed the back of his head. "R-Right, of course. How silly of me." Turning his attention back to his notes, he let out a sigh. Well, there went 'Kawahira got it back and is doing something again' theory out the window.

"If you're that curious, then why not go to the source?" Snapping his head back at the child hitman, Reborn gave a small huff of his own before returning to his previous task. "It's obvious that you want to help out your blood family, even though you don't know what's going on entirely." Tsuna scratched at his cheek, knowing that he was slightly blushing. Was he really that obvious? "Of course you are, Dame-Tsuna."

Spluttering, Tsuna gave the hitman a withering glare. "How am I supposed to go to the source when he's nowhere to be found?" Getting a blank look in return, the boy wilted in his seat. "Not unless you mean that I go to Beika?"

"What better way to get more information then go to the place where he was last seen? It's better than running into dead ends you keep getting here." Reborn shrugged, turning his gun to inspect it for any imperfections. "We'll run a DNA if you get anything that could be useful, especially if you think people are turning into kids again."

"But that's what still confuses me. How could people just de-age without there being a curse? It doesn't make any sense whatsoever!" Reborn could only shrug in response.

How the hell was he supposed to know? If there was no curse, then maybe it was something else? The silence stretched on as Reborn continued to polish his gun as Tsuna flipped through his notes.

"Haibara Ai." Looking at the brunet from the corner of his eye, he waited for the sky to continue. "She was another person to have fake papers." Turning the page again, Tsuna narrowed his eyes, a Boss like aura surrounding him as he hummed aloud. "It also says that she's 'very intuitive' and 'acts like an adult', at least, compared to other children besides Edogawa. Not only that, but seems to be handy in the science subject."

"Like I said, Dame-Tsuna, you're not going to get any answers staying here." Pointing his gun towards the Mafia Boss, Reborn smirked. "Just get your things together, I'll tell mama that you're going to try and 'visit' your cousin. Probably get her to call her sister too, just so you won't look suspicious going over there so suddenly."

Normally, Tsuna would screech to high heavens about the gun in his face, or how Reborn was planning things without his say so. Today wasn't exactly normal though, as the sky nodded with a serious expression. "I suppose while I'm there, you'll have me looking into all the corporations and see if everything is in running condition?"

"I would expect no less." Watching the child hitman leave his room, the teenager proceeded to get his duffle bag and suitcases from his closet. If he was going to get information about his wayward Oba-San and missing cousin, then he was going to have to stay a lot longer than just a week. If he was going to figure anything out, he was going to do it right.

No half-assed attempts this time around. 'Perhaps I should enroll in Teitan? I could get more information that way.' Tsuna mused to himself as he neatly packed his clothes away. Eyes flicked over to his study desk, landing on the photo. "I should probably take that too, just in case. Never know when people would demand for some kind of proof." He murmured to himself, taking the photo and placing it away in his wallet.

Shifting his weight on his feet, Tsuna smiled softly at his mother. "Don't worry so much, I'll be just fine. You taught me how to cook, so nothing to worry about. And I'll make sure to call you every night, okay, Kaa-Chan?"

Nana patted her eyes, smiling towards her son. "I know, it's just been such a long time since you've up and left without a word that I get worried sometimes." Tsuna did his best to not show the shame and guilt. He had only been in middle school –dealing with Byakuran- so her reaction was expected.

"I promise to call you. I'll call you the moment I get there, even" Pulling his mother into a hug, Tsuna continued to smile. He made eye contact with Reborn, whom all but smirked at him, which only caused the brunet to roll his eyes. Finally letting go of his mother, he gave another smile. "Well, I'm off."

"Have a safe trip, Tsu-Kun." Waving goodbye at her son as he stepped into a cab, she watched Tsuna wave back until she couldn't see him anymore.

"Don't worry about him, mama." Looking towards Reborn, Nana tilted her head at him. "He doesn't know it yet, but I plan on going to Beika later. So you'll have nothing to worry about."

"Is that so?" Nana smiled brightly, clapping her hands at the child. "Then I'm glad! With you near Tsu-Kun, then I have nothing to worry about. Just make sure he gets some exercise and eats healthy foods, okay?"

"Of course." Reborn replied, tilting his fedora down. As if he would let Tsuna off without a work out.

In the cab, Tsuna shuddered. He looked over his shoulder and squinted in the direction of his house. For some reason, he felt like Satan was coming for him personally.

Info Time!

Tsuna is 16 in the story, everything else in Canon happened and he is the Boss of Vongola. Vongola has spread into a vigilant group and also made 'Corporations' under an Alias which you would see in the next chapter or so. These Corporations range from Fashion, Culinary, Technology, Medicine, Science, and so on and so forth.

In other words, you name it, they're on it. Speaking of Technology, in this story Vongola is the one with the best stuff. The best example would be: Everyone would have old-style flip cell phones while Tsuna and the gang have either a smart-phone or hologram thing. SO YEAH.

Now, about Reborn & the others. I have obviously aged them up to be 7 years old, mainly because I just want to see Reborn mess and pick on Conan and Ai. Lal and Collonnelo will be the only ones who managed to get their real bodies back.

I want them to be happy and probably try to have kids damn it.

That's pretty much all the information I have for the story. For now at least. I'll make sure to let you guys know if I come up with anything else.

Leave some nice reviews please! Even ask questions if you want!