A/N: Hey, Browniefox here! Yep, still alive and kicking.

So, what have I been working on instead of re-reading the manga and working on Parallel Worlds?

Playing with the part I sort of know and creating this au!

There'll be a sort of explanation at the end in another author note, and if anybody wants to know more just message me, I'm happy to tell! I just don't want to spoil it for those that care.

Please enjoy!

"Papa!" Tsuna ran towards Iemitsu, who had just walked through the front door.

"Tuna Fish!" Iemitsu picked his son up, holding him over his head and grinning up at him. "Did you miss Papa?"

"Uh-huh!" Tsuna nodded vigorously.

"How much?"

"This much!" He spread his arms wide, giggling.

"I'm so glad to see how loving your son is." An old man walked up behind Iemitsu.

"Papa, who's that?" Tsuna asked, shying away slightly from the stranger.

"This is Timoteo, he's like your grandpa." Iemitsu set his son on the ground. Timoteo stepped forward, kneeling down so he was at Tsuna's level. Tsuna quickly hid behind his father's legs.

"It's okay," The old man coaxed, putting a hand out, "I can even prove it."

Tsuna looked up at Iemitsu, who nodded encouragingly. Cautiously, he put his small hand into Timoteo's. Timoteo gently grasped it, as gently as his severely calloused hands could, and slowly, slowly brought Tsuna forward until the child's hand touched just over the man's hip. Instead of touching something squishy, however, it was something hard and solid. Fear at least momentarily forgotten, Tsuna's hand curiously explored the area, feeling angles.

"Papa, papa, he has one too!" Tsuna cheered before slapping his hands over his mouth. Iemitsu laughed.

"It's okay, Timoteo is okay to talk about it around. In fact, Timoteo wants to see your gem. Can you show him your gem?" Tsuna nodded, and after a moment's hesitation pulled down the front of his hoodie, revealing an orange gem.

"He has a lot of potential. Are you sure about this Iemitsu?" Iemitsu nodded. By this time they had gone to the backyard, Tsuna sitting in Timoteo's lap, having completely gotten over his original wariness of the man.

"Yes. You said it yourself, he has a kind heart. He's a very loving boy. The mafia would tear him apart without a second thought. It's best if he stays out of it, and his gemstone, my gemstone, will drag him in. It's best if you do all you can to keep him safe. I would do it myself, but..." Iemitsu rubbed his chest. Timoteo sighed. Could Iemitsu really not see the gap this would create this his family? Or was it a sacrifice he was willing to make. Nevertheless, Timoteo had known when he came what Iemitsu wanted him to do, and he had asked Lal Mirch what she knew about it before coming.

Timoteo carefully crafted a bubble in his hands and placed it over Tsuna's gem. It covered the surface seamlessly. Tsuna's eyes fluttered slightly before closing altogether. It was done.

"Supposedly, his gem should be suppressed. He'll live, obviously, but this has never been done before. We don't know what the repercussions will be." Timoteo cradled the child in his arms. He didn't agree with this in the slightest, but Tsuna wasn't his child and this wasn't his choice.

oOo

If Tsuna knew what was going to happen after he opened the door, he wouldn't've and instead barricaded the door.

Or perhaps, if he knew enough about what happened, he would've thrown the door open and greeted the change with open arms.

As it goes, when the doorbell rings, Tsuna opened the door a bit slowly. While bullies had never come to his home before, Tsuna wouldn't put it past them. But there were no bullies. Instead, he found a baby. For a baby, he was very smartly dressed in a suit and a fedora. Sitting on the brim of said fedora was a lizard-gecko-thing that almost looked like it had a lazy smile on its face. Tsuna's eyes were drawn most to the yellow stone encompassed in a silvery done that rested on the baby's left hip.

"Ciaossu," The baby smiled, "I am Reborn, your home tutor."

"Uh," Tsuna stared at 'Reborn' for a moment before turning his head back inside. "MOM!"

"Yes, Tsuna?"

"A little kid's lost." Tsuna pointed at Reborn. He wasn't prepared for when Reborn jumped and kicked his side, sending the teen well into the house, landing against the stairs. His mother, the sweet, naive woman she was, didn't take note of that. She was more concerned about fawning over how cute and adorable Reborn was.

"Oh, didn't I tell you? I got you a tutor. All he needs is meal and rooming. He'd perfect! And so young and cute too!"

"I might say the same about you, Mrs. Sawada." Reborn replied and Nana blushed.

"And so smooth. Please, call me nana. You'll be sleeping Tsuna's room. Why don't you go ahead and make yourself at home until dinner's ready?"

"Thank you, Nana." Reborn bowed and then went part way up the stairs before pausing. "Tsuna, why don't you come up here too?"

A sense of foreboding crawled up Tsuna's spine, and for a moment he contemplated booking it in the opposite direction. The throbbing in his side hinted that that might not be a great idea. Tsuna followed the baby up the stairs like he was going to his own funeral. Upstairs, the baby climbed onto Tsuna's bed, watching the teenager expectantly. Tsuna shifted nervously. Despite his abysmal grades, he'd never had a tutor before and wasn't really sure how this was supposed to work. Not to mention the tutor was a baby, which was very questionable.

"S-so, what are you tutoring m-me on?" The silence had gotten awkward ages ago.

"To be a mafia boss."

Cherry on top of the weird sundae.

"M-m-mafia?!" Tsuna shrieked. He was quickly shut up as two bullets lodged into the wall on either side of his head. There was a gun in Reborn's hand, and as Tsuna watched, it glowed and changed into the reptile that had been on Reborn's hat.

"Yes, mafia. You are to be the next don of the most powerful mafia famiglia, the Vongola." Reborn declared.

"B-but I'm dame-Tsuna! Isn't there anyone e-else?" Tsuna asked desperately. Sure his life sucked, but surely being involved in mafia would make it suck even more.

"The current Head did have four sons. Enrico was killed in a gunfight, Massimo was drowned, all that was found of Fredrico was his bones, and the fourth is eligible and currently out of commision. Your father would come after them, but his position, which he refuses to give up, makes him unable to take the mantle. As his son, you are the next and only candidate for Vongola Decimo." Tsuna could only stare in shock at the baby.

Then Nana called up that dinner was ready.

oOo

Tsuna was awoken the next morning by a hammer bashed into his skull.

Reborn declared that Tsuna would no longer be waking up late. No respectable boss was late. He then proceeded firing bullets at Tsuna ll through his morning routine. His mom didn't seem overly worried about it, though, and just wished him a good day as he left. The morning had been hectic, but it was almost worth it to be able to walk to school instead of sprint.

Then he saw her.

Walking on the other side of the road and ahead of him was the class idol, Kyoko Sasagawa.

"You like her."

"H-huh?!" Reborn, who had been walking the fence adjacent to Tsuna, hopped down in front of him and looked up at the decimo expectantly.

"Go confess to her." Reborn's face required passive, but there was an unsettling glint to them.

"W-what?! No way!" Tsuna's eyes widened in terror at the sheer thought of doing so. The baby jumped up and grabbed Tsuna's hand, flinging the student across the road. Tsuna let out a high-pitched scream. Kyoko turned around at the sound, just in time to see Tsuna as he impacted into her, sending them both sprawling onto the ground. Tsuna quickly climbed to his feet and started to stammer out an apology when his chest fluttered. A sudden burst of confidence resonated from there, and before he knew it, the words came spilling out.

"K-kyoko, will you g-go on a date with me?" The teens stared at each other for a moment, neither quite realizing what had just happened. It seemed to sink into tsuna first, as his face became bright crimson and he let out at earsplitting screech, running as far away from Kyoko as he could. He collapsed a good distance from her, panting and pinching himself. This had to be a dream. A weird nightmare/dream thing. He knew better than to confess to Kyoko.

"How rude." Tsuna stiffened before slowly turning his head. Reborn. The infant stood there, smiling innocently. "I never took you as the kind to ask a girl out and then abandon her before she could even give you an answer."

"W-wha-, th-that, I-I-" Tsuna spluttered. Reborn's smile twitched into a smirk. Something clicked in his head. "It was you! You, you did s-someth-thing…" Tsuna quickly lost conviction in that idea. That was stupid. Reborn just threw him. But Reborn nodded.

"I synced with your gem." Tsuna's hand went to his chest, the rock that nobody had explained or could explain. His mother had simply said he had it genetically from his dad, who up until last night, he had thought to be dead. Though apparently he was alive and working.

"W-what do you mean?"

"I matched up to you like when two gems fuse. But instead of fusing, I used it to help trigger your abilities and other such repressed things."

"Fuse? Wh-what, how?" Reborn raised an eyebrow.

"If you don't hurry, you'll be late for school."

So much for not running to school.

A/N: So, the most basic of the explanation: Tsuna's gem and all his guardians have gems that belonged to the first Vongola Famiglia (I know, a shocker and twist!). The Ninth did a sort of half-bubble of Tsuna's gem, repressing his gem related powers and abilities (as explained in the chapter). This sort of parallels the whole sealing of the flames, obviously. Timoteo studied Lal for it oooooooh wonder what that means~

Brief summary of chapter:

G E M S

Gun-gecko is best gecko

Yay confusion

totally making things up as I go