The Marriage AU: The Fight

Warnings: Luce is a bit questionable in this fic

Summary: To strengthen the ties between the Arcobaleno and the Vongola companies, Nono and Luce agreed to have a marriage. The next heir, Tsunayuuki and Reborn were married together and after a couple of complications, both liked each other. During this time, Luce was a supporter of their marriage but 2 years later, she recognized she was getting jealous. The next day, she saw Tsuna with some other guy and tells Reborn about it. Reborn does nothing, believing in Tsuna but 2 days later, he saw Tsuna hugging another guy. He confronts her the very night.

"Don't come close to me," Reborn growled at his wife, who was approaching him for whatever reason.

Tsuna was surprised at the sudden change in Reborn's attitude. He was perfectly fine when she had last saw him and she didn't know what brought this sudden change. "What's wrong de-"

She was cut off as she was given a glare from the hitman and she was surprised. After she had gotten married to Reborn, at first things were rocky since neither had wanted to get married and had partnered up to get back at their respective companies.

From there, their relationship started improving and 6 months into their marriage, they had started engaging in couple like behaviors. Everybody was happy that day and they had a huge celebration that day.

(It didn't mean that they stopped their friendly attacks at their companies.)

"R-Reborn, what's the ma-"

"Leave me alone, you two-timer!" Reborn exclaimed and Tsuna could only stare at him with wide, shocked eyes.

"W-what do you mean by two-timer?! I never cheated on you!" Now, she was getting a bit mad - she didn't like it when she was accused of things that she didn't do.

(Now, this could only be Reborn's fault because while Tsuna was capable before Reborn came - she became impossible to reach after Reborn took it upon himself to teach her. Something along the lines of 'I can't have someone dragging me back, so let's get you on a tortu*AHEM*training regime.' )

"I clearly saw you just a few hours ago with-"

Oh hell no.

"I was out with my childhood friend! The only one believed in me!"

Reborn so does not gets to complain when she sees him hanging out with other females. She so does not gets jealous like this, so does not!

After a moment's silence - because Reborn was now staring at Tsuna with wide eyes while Tsuna was the one angry - Tsuna turned around to leave the room

"T-Tsun-"

SLAM!

Reborn winced at how hard Tsuna slammed the door. Now, he felt guilty for jumping to conclusions like that. Also, wasn't it him who taught Tsuna to not jump to conclusions without all the facts?

God, he was so stupid.

To think his possessive and obsessive nature of who he likes would get him into trouble like this. God, remind him again why he decided to pick a fight with Tsuna? He was practically unable to win in a fight like this...

... why did he have to teach her again? Right, because of those bastards that made them get married...

Groaning into his hands, Reborn then started to think of ways of how to apologize to his wife. Because if he knew one thing, Tsuna was very capable of making you suffer without having to lift a finger.

"So... she's still mad at you?" Fon asked, raising one of his brow at the hitman's irritated gaze.

Meeting the martial artist's gaze, Reborn grumbled, "It's been 2 days! How long will she keep ignoring me?!"

Colonello snickered off to the side, "It's your fault for jumping to the wrong conclusions."

Lal gave a snort, "It's even more funny since you are the one who taught her to not jump to the conclusions that early."

Reborn muttered sullenly, "It's not like you often see girls and guys hugging each other affectionately."

Everyone else could laugh at that.

"Please, you practically hang out with girls all the time. If anything, I'm surprised she hasn't done anything yet," Verde retorted with Skull continuing, "And she is Vongola Decimo, the most powerful boss to come into power."

For a moment, everyone took a second to think about what could possibly happen before shuddering collectively. Even Reborn did not want to think of what his wife+student could do.

Mammon rolled their eyes first, "Face it Reborn, you've messed up. Now, you got to apologize."

"I tried! Every second I got the chance to but she keeps giving me the cold shoulder," Reborn whined like a child.

This was a side that the rest of the Arcobaleno saw after Tsuna came into his life. Not to mention, whenever his childish side appeared, it always had to do something with Tsunayuuki.

(It was also why they were waiting for them to recognize each other as their partners. They suffered - still are suffering periodically - 6 months for them to realize that. They couldn't have rejoiced much louder than that. Heck, all of Italia was was crying tears of happiness. Because Reborn + Tsunayuuki? Devils - that's what they were)

"What's worse is that while she keeps giving me the cold shoulder, she is doing everything she would normally do!"

Skull blinked, "She's fine with you being in the same room as you?"

Reborn nodded before grumbling, "I think she enjoys seeing me try and fail."

Lal snorted, "Of course, she's a sadist just like you." Here everyone stopped and thought about that sentence before Lal rectified, "Maybe even more than you."

"That's when she hasn't had her morning coffee," Verde said while everyone couldn't hold back a wince. The horrors that they first witnessed when they saw her angry and without her coffee, cue shudders.

"We promised not to talk about that! Heck, even the Vindice agreed to that too!" Skull exclaimed, looking perturbed.

During all this time, Luce was unnaturally silent but even if anyone noticed, nobody called her out on it. However, a question of 'Why is she so quiet? Usually, she is the first one to help out.' was ringing in their heads.

Tsunayuuki was cooking dinner when the doorbell rang. Wiping her hands on the table, she went to see who it was, since she wasn't expecting anybody and Reborn had his keys.

She scowled - just thinking about it brought a scowl to her face. Over the past few days, she noticed him squirming and trying to apologize and that just brought a smile to her face. Hmph, serves him right.

"Fon?" She blinked in surprise as she wasn't expecting the martial artist to come.

"How do you do, Tsunayuuki-san? I was worried that you would still be at the Mansion," Fon said worriedly as he stepped forward once she invited him inside.

"Ah, I just returned. Besides, I needed to get away from the chaos for a while. Can you believe it, they decimated the West wing!"

Fon could laugh softly as he was led to the table and he could feel a strong and delicious aroma emanating from what she was cooking.

"So what brings you here, Fon?" Tsuna asked after settling at the table.

Smiling with amusement, Fon replied, "I've got to know that a certain Lioness is mad at a certain Raven."

Almost immediately, all the warm and welcoming feel disappeared and was instead replaced by something cold and sinister. Fon, himself, could feel his smile becoming strained at the sudden change in the atmosphere.

'Damn, Reborn, you definitely taught her very well. She was already scary before you came. Now? Now, she's past the point of scary and very well goes into terrifying.'

"Oh?" Tsunayuuki asked, voice laced with venom. "And is a certain Fox here to get us to reconcile?"

Fon did not enjoy what he was being subjugated to. It was times like these that reminded their allies why one should not piss off Sawada Tsunayuuki. Because she could have you down in just an instant.

(Yes, he wanted them to get along - because sooner or later, both of them would get into a killing spree if they do not reconcile. They did not suffer through 6 months (still suffering) to get back to stage 1! ... But he could not say that to her right now, unless he had a death wish)

Raising his hands as though surrendering, he replied with a shook of his head, "No no, I was merely going to ask why you are mad at the Raven."

Chuckling heartlessly (and can you really blame Fon to be getting an almost heart attack?), Tsunayuuki asked, "Did the Raven not tell the little Fox of the incident?"

Trying his best to remain calm and not to break composure (even if he had already broken it a bit), Fon replied, "I'd like to know of the Lioness' side."

With that said, the heavy atmosphere immediately vanished to the warm and welcoming it was once, causing Fon to let out a sigh of relief. Tsunayuuki could only chuckle at the martial artist, who was trying to regain his composure. (She couldn't be this bad, right?)

"So, what happened that the Raven mistook?" Fon asked, a moment later.

Tsuna looked at Fon for a moment (as though trying to figure out his motives) before acquiescing, "A childhood friend of mine - Souta - who also happened to be a guy came to Italy for few days. He was the only one who believed me when I was young."

Fon remained silent at that, he knew how much the woman suffered because of her unique ability to see well-hidden emotions (add her ridiculously strong Hyper Intuition and nobody stood a chance!). When she was young (and when her flames had been sealed), nobody believed her and treated her like a freak, including her own mother (she apologized later when she was introduced to the mafia but the damage had been done). She had to grow up quickly because of that, in order to protect her from bullies.

If it weren't for Luce's, Aria's and Yuni's ability to see in the future, the Arcobaleno themselves wouldn't have believed her either. Even then, only when Yuni told them that she had the same ability as Tsuna albeit way weaker did they believe the woman.

(Inwardly, Fon thanked all gods that Yuni proved it before they met Tsunayuuki or who knows what could have transpired. Now, as it is, Tsuna and Yuni can control it enough that they can switch the ability on or off.)

"So what happened then?" he probed further.

"We met, talked and hung out at least every other day. To me, he was like an older brother and add to the fact that it had been a while since I had seen him, I was.. emotional."

Raising a brow at that, he went to ask before Tsuna said, "He left after a year my mom stopped believing in me as his parents were moving away for work. And yes, he is a civilian."

"I see," Fon smiled serenely. "And what caused the fight with the Raven?"

Huffing Tsuna replied, "Apparently, he saw me hugging him when he needed to leave to get ready for his flight."

For a moment, nobody spoke before Fon choked out laughing lightly, "Apologies, he did imply that but I was expecting a bit more that that. As it is, I can't believe he is this possessive."

Rolling her eyes fondly, Tsuna smiled as she stood to check up on the food on the stove.

"I swear he's like a little kid who's afraid to let go of his mommy sometimes."

Fon couldn't help the laughter that exploded after that comparison. If Reborn would have been, then he would have been mortified.

After having a good laugh, Fon asked, "So when will the Lioness forgive the Raven?"

Huffing, Tsunayuuki said, "I might forgive him today..."

Fon hid a smile at that; Tsunayuuki had always been kind and forgiving despite what she went through. And he was hoping that she stayed that way.

A few days after reconciling:

"Tsuna's acting weird strange," Reborn said to the group of uncursed babies. For a moment, everyone was silent before Luce asked, "How's she acting strange?"

'She better not tell Reborn anything!'

"Well, she's spacing out more often and isn't talking much," Reborn replied sipping his espresso.

'Good, she's distancing herself.'

"Maybe you made her angry again?" Fon suggested. Reborn shook his head indicating that no fight had occurred after their latest fight.

Looking at each other, Luce said, "Maybe she's just tensed. You know, from the steady rise of crimes lately."

"Possible," Reborn said. "I'll ask her.