LunarFallenStar: Hey guys! I've been getting requests to create a story about Ed's (and kind of Al's) time with the first generation Vongola family, so here you go. Also, shout-out to HebaAce for their awesome title suggestion which is also the title of this story!
Well, first things first, I have to get a few things out of the way. To understand this better, I would recommend you read my story 'Hitman Alchemist' first, but it's not necessary as hopefully most things should be understandable in this story. Furthermore, this story starts off before the Vongola was formed, so it starts off when Giotto and G are first forming the Vongola. This story may diverge from how things originally are in Katekyo Hitman Reborn so I hope you all won't mind that.
I will apologize ahead of time if the characters are a bit OOC.

*Edited May 22, 2014

Ed ran through the complicated mine system, his brother trailing behind him. Ed's uneven breaths sounded through the stillness of the air, his younger brother's breathing in not much of a better state. Footsteps resounded further ahead of them, but they were growing louder and louder as the two brothers got closer to their target.

Suddenly, the footsteps stopped and Ed screeched to a halt, soon coming face to face with the deranged psychopath they had been chasing all over Europe. The man was clad in a dingy lab coat, blood and dirt marring what was once no doubt pristine whiteness. The deranged scientist looked up, grinning in sadistic glee, "I see you've finally caught up to me. I'm surprised to see that your tiny legs could keep up."

Ed gritted his teeth, but tried to keep his temper in check, "What the hell do you think you're doing! You're using innocent lives to create another weapon for war!"

"This is the cost of progress!" The man rambled on, "Who cares if a few lives are lost in the process? If this weapon is produced, Germany shall reign supreme once more!"

"A few lives?" Ed growled, bangs shadowing his eyes, "A life is irreplaceable! It's value will never be equal to this stupid weapon of war!"

"Oh?" He leaned his head back, his psychotic grin looking as if it would split his face in two, "I see you have those pesky emotions of compassion, empathy, and all that other crap! People like you can never see eye to eye with true geniuses like myself."

Ed looked up, light hitting his face and exposing the fire in his eyes, "You're going down!"

Alphonse skidded to a stop behind his brother, "Nii-san! Calm down!"

"How can I keep calm when this is happening!" Ed said, gesturing to the pile of rotting bodies littering the mines.

Al's eyes widened in horror when his eyes landed upon the unseeing eyes of a child, "What is this?"

"This is science!" The man chuckled darkly.

"Science that doesn't benefit people is no science at all!" Al yelled, his own anger growing.

The man groaned in exasperation, "You both are exactly the same. Leave now, you're becoming a hindrance to my work."

Ed growled and ran forward, punching the man in the face. Hard. Ed winced slightly as the force of his punch caused his knuckles to bleed, a loud crack erupted in the still atmosphere of the mines as the scientist's nose broke under the force of Ed's punch. The scientist flew backwards, blood flying out of his broken nose and split lip. He landed with a thud on the damp ground, Ed standing over him, flicking the blood clinging to his fists off of his knuckles.

The man laughed maniacally, bloodshot eyes widening as pure insanity took over, "You're quite something... but it seems you're a glutton for punishment."

Ed raised his fists, tensing slightly as he waited to strike in case the man planned to counter-attack.

The insane man slowly stood up, blood trickling down his face, painting a grotesque picture. He staggered over to a wall and fished around in his coat for something.

His posture straightened and he turned around, holding some kind of remote in his hand, "I thought I wouldn't have to kill you, but you leave me no choice... this is what I developed this weapon for after all."

Al and Ed looked at the man with quizzical expressions, wondering what nonsense the man was spewing now. That was when Ed's eyes widened in realization, "You dumbass! If you use that, you'll die too!"

"It is merely the price of progress!" He yelled, "Someone will surely pick up where I left off in my research, but only this time... YOU WON'T BE AROUND TO STOP THEM!"

He raised the remote high in the air, causing Ed to run forward in attempt to stop him.

"Nii-san! No!" Al yelled as he ran to stop his brother.

Ed halted in his tracks as the man pressed the button. Panic and Adrenaline flooding his system, Ed clapped his hands as light engulfed the mine shaft.

Somewhere Else

Giotto and G walked down the small path alone. G gritted his teeth in annoyance, "Those people are idiots! How dare they talk to you like that!"

Giotto smiled at his friend, "Well, it's understandable. People naturally wouldn't believe that we could form a vigilante group when we're just kids who couldn't accomplish anything by their standards."

"But still! We're trying to help them! They could at least be thankful!" G humphed, crossing his arms in irritation.

Giotto chuckled, "Calm down, we haven't done anything worthy of their thanks yet."

G sighed and unfolded his arms.

The pair continued to walk down the path, both looking up in shock as a dark shadow loomed over them. They briefly saw what appeared to be two people falling before they collided with the dirt of the path.

"Nii-san... what happened?" A voice, belonging to what sounded like a young man, asked tentatively.

"I don't know, Al," A second voice said, sounding more boyish and teenage-like, "I just know we aren't in that mine any more."

"Would you please get OFF OF US!" G growled in anger, throwing the two unknown people off of him.

"G calm down," Giotto said, dusting himself off as he stood.

A young man with chestnut golden hair looked at them in shock. After a few moments, he bowed over and over again in apology, "We're sorry! We just couldn't control where we landed and we didn't know you were there-"

"It's fine," Giotto interrupted, smiling softly, "No harm done."

"Anyway," The short, golden haired teenager said, "Do you know where we are?"

"Oh, you're in Italy," Giotto replied.

The two strangers shared a glance, shock evident on their features.

"Do you two have a place to stay?" Giotto asked, worried about their shock, "It appears that you weren't expecting to be here."

The golden haired one faced them again, rubbing the back of his head sheepishly, "You can say that..."

G elbowed Giotto and whispered, "Do you really think we should help them? They fell from the sky!"

Giotto sighed, "They're in trouble and how can we expect to help multiple people if we can't help them."

G sighed, but didn't argue any further.

Giotto faced them once more, "If you need a place to stay, we'll be happy to help you out. I'm Giotto and this is G."

The shorter one grinned and held out his hand, "I'm Edward Elric and this is my brother Alphonse, but you can call us Ed and Al."

Al bowed slightly, "Nice to meet you."

Giotto smiled and shook Ed's hand, "Please follow me. We live a little ways away."

Ed nodded and thanked Giotto and G and began to follow them down the path, his brother trailing behind him.

LunarFallenStar: And done! I hoped you liked this chapter! Also, this fanfiction will mainly driven by you readers! Leave a review or PM me with a suggestion about what the group should do and adventures they will have! I will definately take every suggestion into account and will try to include every suggestion in this story after the introduction phase of this story. This story will hopefully get better and please R&R!