Nana took one look at Hayato and squealed. Especially when Tsuna insinuated that the slightly older teen was going to be a permanent house guest in the new future whenever he visited. She loved having children to spoil, and Hayato definitely needed it.

Hayato was very uncomfortable, but eventually calmed down.

"This is your mother?"

"Aunt Emiko is almost worse," he replied. "Just be glad we're not stuck in one city, with a bunch of civilians in normal school."

Tsuna shuddered. The only reason he had stuck around as long as he had, much less kept pretending to be normal was his daily 'meetings' with Hibari.

Speaking of Hibari...

Tsuna dodged the irate teen's tonfas, and was mentally cursing the Storm Arcobaleno.

"I am going to kill Fon for this. Or at least prank the shit out of him!" shouted Tsuna. Hibari's eyes grew even more bloodthirsty.

Good thing they were in a secluded area, far from anyone else. Not even Hibari's second-in-command was allowed near, and to be honest no one was suicidal enough to get in her way when she was in this mood.

"Wao. The annoying carnivore said you knew things about the omnivore. Explain now or I will gladly bite you to death."

"...I am seriously going to kill Fon for this," said Tsuna. "And I want your word that this doesn't reach anyone. I know you can keep a secret, and this is almost as important as the one you're hiding."

Hibari blinked at him.

"What secret?"

"I know about Kiyo."

Hibari froze. There was an intense bloodlust around them, as she was very pissed.

"What?" she demanded, almost ready to rip his throat out.

"I have the original documents to prove it. And you didn't hide your tracks as well as you like. Right now my mother suspects the truth, but never bothered to confirm it like I did."

"How?" demanded Hibari, clearly becoming stressed.

"Phantom Dark never goes beyond flirting when it comes to boys. The fact he took such an open interest in you, enough to steal a kiss, made it pretty obvious you weren't an actual boy, but pretending to be," said Tsuna. "And before you ask, the original documents are not in my house. I'm not stupid."

Hibari glared at him.

Tsuna sighed.

"Look I could care less if you're a guy or a girl. You're still damn terrifying and you're still Phantom Dark's favorite rival, if only because of how much chaos you cause to the herbivores that annoy you. I'm not going to spread the truth around the school or town because it's honestly not my business. And from according to Fon you've been gravitating towards me for months since Dark went active."

Hibari's glare doubled.

"Who is Phantom Dark?"

"You keep my secret and yours will remain as such until you're ready to admit the truth," said Tsuna immediately.

"Deal," said Hibari.

Tsuna had an odd look on his face, before wings sprouted from his back. For a few blissful seconds, Hibari thought that was the secret he meant... right up until "Tsuna" became Dark.

"Hello angel. Miss me?"

Hibari stared.

"What the hell?!"

"To make a long story short I'll use the explanation Tsuna came up with for his cousin. Four hundred year old guardian spirit, family legacy, and the switch goes both ways with identical triggers," said Dark, listing it off his fingers. "As for the phantom thief thing, well, every family needs a proper specialty, right?"

Hibari stared.

"And the flirting?"

"Well the trigger is literally called the 'sacred maiden', though I disappear after a while," admitted Dark. "Why did you hide your gender anyway?"

Hibari scowled.

"Do you know how the older families treat girls, especially their heirs?" she asked.

Dark blinked. That...explained a lot.

"Ah. So your pride wouldn't allow you to be married off to some idiot you could beat anyway, so you hid as a boy to throw them off until you were strong enough to deal with anyone stupid enough to try and marry you?"

"The pint sized carnivore may be annoying, but he was very helpful," admitted Hibari.

"How about we work out a deal then. If and when your secret gets out, you can use me or Tsuna as a shield from the worst of it. After all, they can't marry you if you already have someone you're interested in with a distinguished bloodline, right?"

"Thieves would be barely acceptable."

"I wasn't talking about the phantom thief thing. That's a secret that's been kept for four hundred years after all. I'm talking about the other bloodline Tsuna has. Ask Fon about the Vongola and if the 'lost' heir would be acceptable as dating material. That way you get to keep the morons off your ass, Tsuna gets to keep his favorite rival, and if things work out you'll have a proper Sky to call your own. Even Fon commented that you were slowly drifting towards Tsuna for a while now."

Hibari considered it. This was a very good deal, because it meant that even if the lesser carnivores and pathetic herbivores found out her gender, then her family couldn't set her up with someone she would never tolerate. And as annoying as Dark could be, Tsuna was a decent challenge when he actually took things seriously. Even if she hated it when he tricked her into traps that took five minutes to get out of so he could escape.

If Dark and Tsuna were the same person (more or less), then at least she wouldn't be stuck with someone she would never accept, or worse, would insist she behave "like a proper lady" as her mother used to insinuate before everyone slowly forget Kiyo and just saw Kyouya.

"Hmph. Acceptable, omnivore. I suppose this means you'll want me to stop chasing you?"

"What gave you that ridiculous idea? Do you have any idea how boring it is, having the same kind of rivals for centuries? You're the most interesting one I've had in far too long! Besides, the chaos you bring when you force the idiot cops to allow you in is far too much fun for me to want you to stop," said Dark without thinking.

Hibari's grin was vicious and more than slightly terrifying...for everyone except Dark and Tsuna.

"Wao. I find you acceptable, annoying omnivore. But if this works out I expect a proper date from your other half when we're abroad."

Dark grinned.

"You have a deal, Kiyohime," said Dark, kissing the top of her right hand. Seeing the bloodthirsty girl blush, he couldn't help but cackle inwardly.

Considering her nature it was very unlikely Tsuna would ever be fully rid of him. Oh well, at least Tsuna was one of the most entertaining partners he had had in a very long time.

Two days later...

Hibari was at the front door, and with her was Fon.

She was rather pleased about something.

"Remember the agreement, omnivore?" asked Hibari.

Tsuna didn't have to ask.

"I take it they agreed to the idea?" he asked Fon.

"Indeed. This neatly solves several 'problems' that would have arisen later once the Mist illusion that was used wore off. It was never meant to last permanently, and this way I know she is in good hands," said Fon serenely.

"Who are you friends, Tsu-kun?"

Hayato was doing his own doubletake at seeing Fon. He might not know much about the Storm, but he damn well recognized the pacifier.

"Mama, this is Hibari... you know, the one Dark took such a liking to," said Tsuna cryptically. "And this is their uncle, Fon. He's loosely affiliated in the underworld, though he's more of a freelancer among the Triads."

"Is it wise to discuss such topics?" asked Fon.

Nana's eyes flashed a bit.

"I took an interest when Father told me exactly what those Flames meant, and Tsuna would never hide anything from me. He might divert the topic, but he is at least honest with me. Which is far more than I could possibly say about Iemitsu," she said darkly. "I just wish the divorce lawyers didn't cost so much to hire."

Fon blinked.

"Iemitsu as in Iemitsu Sawada?" said Fon in open surprise.

"We don't talk about him in this house, and if he ever intends to come back we generally plan to be out of town without telling him. If he thinks we'll blindly accept that he sealed me when I was five after I activated my Flames, only to leave us alone for years at a time, then he's sorely mistaken. There's a reason Mama and I claim the Niwa name, rather than live with his," said Tsuna annoyed.

Fon could understand that, until what Tsuna said caught up with him.

"Wait... what do you mean he had you sealed at five?"

"I activated early, and just my luck Iemitsu was visiting with Vongola Nono at the time. I don't remember what was said, just that immediately after I felt like I was always freezing and that my brain felt like it was in cold syrup. It was bad to the point that even the teachers noticed something was wrong...so Mama took me to visit grandpa and aunt Emiko. Our family specializes in sealing, so they found the counter and got rid of it before any real damage could be done. And since Iemitsu never really stuck around for more than a few days after that, not visiting for years at a time..."

"Your mother decided to train you in their ways, and forget his."

"I identify with the second son more than the first."

While Tsuna and Fon talked, Hibari was terrifying Hayato and blinking confusedly at Nana. Like always, she took such oddities in stride. It didn't take long for Hibari to warm up to the woman, mostly because she started making hamburger steak for dinner.

"I see you've acquired a Storm."

"He's still inactive, though I have high hopes for him. Have you had any luck with that feather you took with you last time?" asked Tsuna.

"Yes, about that..." said Fon, pulling the familiar orange feather out.

Tsuna blinked.

"That's the first time I've seen it linger."

"I have a theory about that. But I'm not sure how to feel about it."

"Well it's not like we're chasing you out. Besides, the deal Dark made with Hibari benefits everyone, especially them," said Tsuna, picking up the tiny Storm and giving him a proper seat with a few extra cushions. There was no reason to treat him like a child when he wasn't one. Tsuna also got some fruit for the monkey. "You know I never asked, what is your monkey's name?"

"It's Lichi. He has a special preference for nuts and dried fruits," said Fon.

Tsuna nodded and pulled out some of the trail mixes his mother made. He liked eating them and they were easy to make and not have to worry about spoilage. He made sure to pour some in a bowl, and put it where Lichi could get to it. The monkey absolutely loved him for it. Fon had a content smile on his face.

"So what's you theory on why the feather lingers?"

"If you recall, I took five feathers with me. This is the only one I kept, and I've confirmed that three of the other five had already disappeared. They seem to have an unusual effect for the two that stuck around. I suspect that the feathers are a very unusual way of detecting those who could possibly harmonize with you as Guardians."

Tsuna paused, and stared.

"What?"

"You've said yourself that you have an unusually high affinity for Flames and magic. It's possible you could draw in multiple sets of Guardians, as opposed to the single set most Skies draw in. I gave the other feather to a...colleague... of mine. One who has an interest in odd flames. He admitted he's been feeling more on an 'even keel', I suppose you could say, since he got that feather. I believe he made it into a bracelet of sorts."

Reborn had been surprised at the idea of solid flames, especially feathers...but after having it on his person for two weeks straight (mostly because Fon admitted he had his own feather for a full month straight with no ill effects) he noticed a major difference in his Flames. Namely that as long as the feather was on him, his Flames felt content. Happy.

Almost as if he had a proper Guardian bond with a Sky.

Naturally Reborn very much wanted to meet this Sky, if only to see if he could establish a proper bond. Fon had admitted that the boy didn't seem to be the sort that tried to force a bond like so many before him had.

"Ugh. I just hope this whole Guardian thing doesn't mean I have to quit stealing. It's about the only 'nice' job to be found in the mafia," said Tsuna.

"I have noticed a distinct lack of injury or death attributed to your heists. Though some are a bit..."

Tsuna grinned.

"Some of the unspoken rules of the great thieves are pretty much universal. No killing and if you want to be flashy, then by all means go for it so long as no one is directly harmed. Otherwise you'd be nothing more than a common thief, and phantom thieves are meant to bring hope and mystery back into the world."

Fon blinked, before a smile came upon his face.

If his theory was correct, then he could live with sharing a Sky with his niece.

"Wait, you said there was a distinct lack of injury or death. Then why did I find several reports saying multiple cops had to go to the hospital after a heist?" asked Hayato.

"Which ones?" asked Tsuna. Hayato listed them, and Tsuna snorted. "That wasn't Dark. That was Hibari being Hibari and teaching the herbivores where they stood on the food chain."

He would swear Hibari preened hearing that comment. There was also a weird warmth that bloomed in his chest, but he ignored it.

Fon however, noticed the change immediately and snorted.

"I had a feeling once this matter was settled it would happen, but not that fast."

"Hmm?"

"You harmonized with Hibari," clarified Fon. "The fact you accept their bloodthirsty nature as a given and allow them free reign to challenge you was enough to get their Cloud and Mist Flames to accept you as their Sky. Which means you'll never be rid of each other, though you may want to stay close to one another until the bond settles properly."

"And since Hibari gets really antsy if they're away from Namimori for too long..." sighed Tsuna in exasperation.

"Boss?"

"It looks like we'll have plenty of time to train you as my assistant, since we're sticking around for a while. Hibari has claimed this area as their territory and they got increasingly erratic while they chased me around Europe for two months. It was a good thing I was heading to Japan when I did, because I really don't want to see what would happen if they had to give up their chosen territory," explained Tsuna.

Fon looked at Tsuna with open approval now.

"Any doubts I had about you just vanished," he said smiling. "The fact you understand Cloud instincts so well speaks favorably of you, as does your willingness to temporarily stop stealing for a while until the bond settles."

"Well I'm sure Mama has been really lonely without someone in the house, and Hayato really needs extra training before I can seriously call him my assistant. That and he needs to learn how to hotwire a car properly," teased Tsuna.

Hayato flushed.

"It was one time!"

"And you managed to cross the wires just right to 'accidentally' blow up the car we were stealing. Face it, you need the lessons," said Tsuna. "And considering the majority of the Disciplinary Committee used to be delinquents... I'm sure they could teach you the basics of lock picking and stealing cars."

Fon hid a smile behind his sleeve. He could easily see himself harmonizing with this Sky...if he still could.

He would stay in Namimori for a while, just to make sure the bond was settling properly, before heading back to his job.