Ben 10 and Katekyo Hitman Reborn! do not belong to me.

I placed a poll in my profile, I would really appreciate if you go there to vote for what flame you want Ben to have, you can even suggest your own! ^^ Pleeeeeease!

And please review too!

Enjoy!

Sawada Tsunayoshi, welder of the Sky Vongola Ring and next boss of the biggest mafia family in the world, the Vongola (even though he really doesn't want to be).

Tsuna woke up in a strange room, and with little options left, decided to escape by the window, when it hit him:

"Wait! Won't the Millefiore be able to track my ring? Waahhh! I don't want to fight them again"

Tsuna decided to hide in a bush outside the house he was, but got surprised when he looked at the city. He never saw that place before, but it looked like he was back into the present.

"Did I come to the present? But why I ended up in a weird place? I have to get back home!"

He started to run until he remembered he had no idea of where to go.

"It's useless!" He began getting sad but remembered that he can't escape now. His eyes narrowed and for one moment he stopped looking like the No Good Tsuna and more like a real leader.

"Gokudera, Yamamoto, Kyoko. My friends are in the future, I can't abandon them like that, we have to stop the Millefiore and protect everyone"

Tsuna determination went away as fast as it came when he realized that he had no idea from where to go. But then he put his hand in his pockets and found the communicator build for him to invade the Millefiore base.

"I can contact them with that! Hello, guys, is anyone there?"

When he was about to try contact again a huge sound was heard, probably an explosion. Tsuna good heart got the best of him and he headed to the direction of the sound after hearing the screams of help.

That was one of the rare-turning-common times where he realized how much Reborn training changed him to a coward to someone who would at least try to protect the people around him. Of course when he saw what made the explosion the fear came back in full power.

Gwen wasn't having the best of days, first Kevin was away so she had to take care of the trouble in Bellwood, and normally this wouldn't be such a problem with Ben help. But he was still nowhere to be seen.

"Specimen 'Benjamin Kirby Tennyson' has still not been located, keeping actions as to bring the subject in question inside attack area"

"Can you shut up?"

That Inspector 13, with its blue Techadons, was really getting in Gwen nerves, she preferred Ben stupid enemies who just shouted 'I will beat you up!' or something like that and charged like a dumb bull.

"Humph, where is Ben dammit?"

Gwen groaned as she created a mana shield for the Techadons, that it was instantly broken. The problem is that that were two of them and the other nearly got her from the back, but her reflexes were better than that.

She knew Ben liked to sleep longer in the weekends but that was ridiculous. She called him a dozen times and the destruction was happening very close to his house. She considered running away to kick him out of bed but her thoughts were quickly distracted when she saw a flame line being formed in the air, like if someone had used fire to propel himself to her direction.

"Ben?"

But then her vision caught up with the source the flames, to see a normal human. He had messed and very tall brown hair, big and frowned orange eyes, and she saw the flames were coming from gloves in his hands. But then she noticed other thing:

"Is this guy wearing pajamas?!"

The Vongola boy founded the Dying Will Pills and X-Gloves (that in this moment were just very awkward mittens) in his pockets, and after he saw a green man with two giant robots attacking a girl that created pink energy shields, it was sure a relief.

He swallowed two pills and put the mittens in his hands, not long after that a flame started to form in his head, his mittens transformed in metal gloves with the top being round and transparent blue, from the round part he could see the symbol of the Vongola. His eyes suddenly became serious and with a vivid orange color. The coward boy was nowhere to be seen and in there just stood a warrior.

Dark orange flames started to engulf the gloves, and soon they were propelling him in the air to the direction of the trouble.

Arriving there he stood between the robots and the girl.

"I don't know who you are, but stop destroying this city right now"

The green man blinked a few times, showing little reaction, before saying:

"Who are you?"

"That is not important. Stop this. What will you gain from harming people?"

"This situation is nothing but bait for the homo sapiens known as Benjamin Kirby Tennyson"

"Wha-"

That name, the name of the person whom the room he woke up belonged to.

Apparently tired with this situation the green man turned his head to the robots.

"Kill him, he is not worth experimenting. However don't damage the gloves, I want to study them, maybe it can be a device as interesting as the Omnitrix"

He had no idea what this guy was talking about but it sounded like a menace.

Tsuna noticed the red haired teen was still behind him. With a very surprised expression and dumbfounded look.

"Excuse me, are you okay miss?"

"Yeah I am fine. Who are you?"

Tsuna looked at the ground in deep thought but was brought back to reality by a shot that for little didn't strike his leg. Tsuna coated his hands in fire again, and started flying as fast as possible in the direction of the robot that attacked him. It looked like he was about to strike the enemy head on but a little before touching it, he turned off his flames, and twisted his body so that his legs were facing him, and putting his arms back activated the flames again, gaining propulsion and hitting the chest of the robot with the right leg while the left was folded.

The robot flied at least ten meters before stopping, but still stood in its feet. Tsuna was going to strike again but he noticed the other robot to his side, ready to give him a backhand punch, caught by surprise, Tsuna put his arms in front of his body and prepared for the impact, when he saw a pink transparent barrier standing between them. The punch broke it to shreds but before he could regain his equilibrium he was stuck with full force by what appeared to be a pink laser. It burned the side of the robot and distracted him just enough for Tsuna to move out of the way.

He was close to the girl, and the pink spheres around her hand were the confirmation he needed for who saved him.

"Thank you"

"I don't know who you are but since you attacked the robot I will give you the benefit of a doubt"

"Okay" Said Tsuna, with relief that she seemed like a good person.

Tsuna took a glance at the robots. He was a little happy they were harmed more easily than the Varia's Gola Mosca and that since the girl called them 'robots' there probably weren't people inside of it. However he got shocked when saw the part of the robot that had been blown off by the laser, being quickly healed and in a few seconds back to normal. The robot Tsuna kicked didn't sustain so much external damage, but he also looked fine, like he had never been attacked.

"These guys can heal?!"

"It's one of the reasons why it's a pain to deal with Techadons"

"What are Techadons?"

"These alien robots"

"Alien?"

"Yeah they are produced by beings known as 'Inspectors' and are really strong"

"Is that green guy an Inspector?"

"Yeah, Inspector 13 to be exact"

"What he wants by attacking the city?"

"He wants to capture my cousin, you know, Ben Tennyson"

Cousin?! Then maybe she knows what is going on or at least where this Ben is. He was about to ask but saw the girl averted her eyes to the side and created a pink platform to stay in the air. Tsuna didn't have to look to realize the robots were coming back. He quickly activated his flames, and after flying up to the girl height, the flames turned light orange and he was hovering in midair.

"We have to finish them in one shot"

"Yes but they are tough and they learn with mistakes too"

Tsuna clenched his teeth in anger, but then he remembered of the technique he recently developed.

"I have an idea, can you distract them for a moment and place them in a straight line?"

He just realized how this sounded way too difficult, and was about to take back what he said, when he saw the girl jumping the platform and reaching the ground.

"What are you doing?"

"What you asked, duh!"

Tsuna had to admit that for someone who looked like a regular girl (except for the pink energy powers) she sure was brave.

The Vongola boy flames turned dark orange again and he fled away, keeping between them the distance of a truck length at least.

"I have to do it. I need to get stable"

One of the Techadons headed in Tsuna direction but the girl quickly wrapped him in energy and threw him at the other one.

The situation was hard for her but Gwen felt that maybe without Ben, that guy was her best option. Even though defeating them was hard, just letting the Techadons far from the pajama boy was a lot easier.

Gwen created a huge barrier in front of her, but instead of using it for defense, she made the barrier move forward and push the robots back to where they were. The half Anodita used the time she got to look to the boy and what he was planning. His right hand was stretched to the front and the left to behind, his legs were perpendicular to the arms but his torso and head were twisted to Gwen direction. Than very large flames started to be ejected from the back hand, the light orange ones that she remembered he used to hover. While that, his right hand was starting to charge with appeared to be the orange flames the boy used to fly fast.

'What in the world is he planning?'

Before turning back to the fight Gwen heard the boy yell:

"Now!"

Gwen nodded and created two barriers, one at each side of the robots. Like the one from before she made them move, but this time to the center making the two robots get in line. She knew it wouldn't remain too long so she reached her magical book and read a few magical words in it. The same spell she used against Ben when they fought, to make Chromastone get stuck in the melting floor. And now the same was happening to the Techadons, as they started to sink like they were standing in quicksand.

"Get outta the way!"

After hearing that Gwen started to runs as fast as possible until the buried Techadons were looking like ants. Gwen thought she was exaggerating a little, but then the attack happened and she was happy she got away.

"X-Burner!"

Tsuna unleashed his attack. After making sure the girl was far from the area the attack would probably hit.

The half Anodita stared in amazement and horror when the attack happened. From the boy hands were unleashed very big orange flames, at least large enough to completely engulf maybe even a truck. With the strong light all she could see with her eyes half closed were the Techadons silhouette being slowly erased from existence by the concentrated fire.

After looking at the crater that remained Gwen left out a whistle and admitted, that was impressive.

Her happiness was soon cut short when she realized something:

"Where is Inspector 13?"

"No!"

Gwen was a little thrown off by pajama boy yelling but knew what was happening.

After putting his arms back to the sides of his body he let a sigh, both of relief and disappointment.

"It has got stronger but I can't use its full power" He groaned to himself.

The self-depreciation was cut short when Tsuna saw a white and green figure behind the girl.

"No!"

Tsuna used his flames to its max power and instantly disappeared, appearing behind Inspector 13, who was with some giant-key like device, obviously to hurt the girl who saved him. The green alien noticed Tsuna, but before he could turn completely back, he was hit with a fire-coated punch. It sent him flying and he fell to the ground. He quickly got up and rubbed his now scorched face before reaching a cubed metal device in his pocket.

He put his hand backwards as if he was about to throw it, Tsuna got in guard but the Inspector threw it at the ground. It stopped in the air and formed a blue energy circle.

"Maybe next time" Said him before passing the circle and disappearing together with it.

Gwen sighed in relief before practically falling at the ground.

"Looks like it's over"

"We are even now"

The boy sat in the ground exhausted as the flame in his head disappeared. His eyes became brown and more open and his gloves turned into… Mittens?

"Well, I guess so. What is your name?" Asked Gwen, trying to don't pay attention to the bakery boy.

"Sawada Tsunayoshi. But everyone calls me Tsuna. And you?"

"Gwendolyn Tennyson. Call me Gwen"

"Tennyson…"

Then it stuck Tsuna what he wanted to ask.

"Oh, yeah! Who is this Ben Tennyson?"

"You don't know who he is? That's rare, he probably would get pretty sad if he heard someone doesn't know him"

"I woke up into his room"

"What?"

Gwen surprised look made Tsuna flinch a little.

"I-I mean… I don't know what happened. I was sleeping in my… house. And I woke up in the room of this guy. That appears to be very famous here"

Tsuna noticed that in some places in the city it was wrote 'Ben Tennyson', 'Ben 10" and such. Especially, close to the word 'smoothies', maybe some group related to him.

"Yes. He is the world superhero"

"Superhero? He fights things like that regularly?"

"Yeah, he protects the world, universe and such"

"Do you know where he is?"

"Well. My guess was in his room sleeping, but after what you said, if it is true, I have no idea. I thought it was weird for him not to show up at the problem. But to think he was replaced by you. Where are you from?"

"Namimori. Japan. Asia. Earth"

"Okay, okay I got it. Well Tsuna, now we are in Bellwood. USA. America. But still Earth"

"USA?!"

Tsuna crouched in fear at the thought of being lost at a faraway country.

"My mom is going to kill me! Reborn is going to kill me! I am dead!"

"Woah, calm down. Who are you talking about?"

"My friends, I was with them at the future"

"Future?"

"Yeah. It is a long story"

Tsuna never liked to involve anyone in mafia business, but right now that girl was his only hint to go back home.

"Okay come with me"

Gwen suddenly getting up scared Tsuna, a little before noticing her words.

"To where?"

"A friend of mine. I am pretty sure he can help us"

"There is someone like that here?"

"Yes. But before…"

Gwen crouched to look in the eyes Tsuna, who was still sat down on the road.

"Tell me this long story"

Tsuna got a little shocked by her request, but quickly decided it was best to be honest. Since he couldn't go back after what he said.

"Well, there is this group called Vongola…"

"Byakuran!"

Said a very thick and angry voice.

"What would that be my friend?" Asked a smiling white haired man, he wore a lavender jacket and had a tattoo under his left eye that looked like three purple stalagmites.

"Are you sure your stupid plan is going to work? I will throw you at an exploding star if you fail to match my expectations"

Byakuran just put a white marshmallow in his mouth like if he hadn't heard a thing.

"It's better for you to know that the same goes for you" Said Byakuran, with the smile never leaving his face.

The owner of the angry voice growled, before changing the subject.

"I hope that Sawada Tsunayoshi can do what you say he can"

"I am sure about him, I just don't know about your friend Ben"

"We will see when they face each other"

As an extra dimensional event, Ben and Tsuna got shivers at the same time.

Well that was it. It's hard to come up with the story since I can only think about the cool parts. if I were to write what is in my head the story would be over in one chapter ^^

Anyways I am open for ideas and opinions. And lets make the next chapters better!

About my personal thoughts, I liked to write an action scene, specially Tsuna kicking the Techadon, but I think I have to add a lot of story before going already to the fights. But don't worry! I will make sure to have a battle in almost every chapter! And I guarantee you that the next chapter is going to be GOOD!