Disclaimer: I do not own Hitman Reborn or any of the characters. I write this fic for my own amusement and make no money off of it.

Warning: this fic contains AU, alternate universe, cussing, genderbending, soul marks, mention death, violence, character death, ooc, oc probably, evil twin and romance.

To a World of Soul Marks

Prologue: Waking to Changes

'I truly have no regrets,' were the last thought of Neo Vongola Primo, Tsunayoshi Sawada, as he breathed his last breath and peacefully left the world of the living. At the age of seventy-five Tsuna had accepted his death and was more than willing to embrace the after life, unfortunately Tsuna had forgotten one important thing. The most important thing was that the universe loved to screw with Tsuna. So it should not come to anyone's surprise that in the instant after his last breath Tsuna found himself coughing up water.

Turning over so that he was on his hands and knees Tsuna winced as his whole body ached as he continued to cough up water. Hacking up the last of the water that Tsuna had somehow swallowed, Tsuna took several shaky breaths. Bringing his hand up to wiped his mouth and finally took in his surrounding.

Tsuna found himself sitting on stones, above him was a darkening sky, ahead of him were tree's as far as the eye could see and behind Tsuna is what looked to be a river.

Tsuna winced again as he sat down in shock.

'How,' Tsuna thought as he stared at his surrounding in shock. 'How in the world did I end up here?!'

'No wait,' Tsuna thought as he shook his head. 'First lets take stock of the situation I'm in, then I can think about the how and why.'

Nodding his head in agreement with himself Tsuna once again studied his surrounding but could not see any familiar landmarks. In truth the river Tsuna sat by actually reminded Tsuna of a river near Namimori. Tsuna couldn't help but reminisce about the times he, Hayato and Takeshi had visited that river during their teenaged years. Camping, cooking and swimming those were fun times back then.

Tsuna quickly shook his head to snap himself out of his memories of the good old days. Now that he had studied his surrounding Tsuna needed to examine how he was physically doing. Tsuna had woken up near a river coughing up water. So it would stand to reason that he must have been in the river. Tsuna whole body was also sore so perhaps he had fallen in some how.

Tsuna lifted his right arm ignoring the pain that came from moving his body and stared dumbfounded at his arm. The arm that Tsuna stared at did not belong to a seventy-four year old man who had spent around sixty years in the mafia but someone much younger. The arm was skinny with no muscle and the skin was soft and smooth. Tsuna hadn't had such smooth skin and lack of muscle since he was thirteen.

'Crap!' Tsuna thought in a panic, 'could it be the ten year bazooka again.'

'Calm down Tsuna, first check to see if the rest of your body is in okay shape.' Tsuna reasoned with himself and began to move his body.

Ignoring the pain Tsuna moved his arms, his hands and his fingers. While he moved his long brown hair fell in front of his face.

'Huh that's odd,' Tsuna thought as he moved his hair out of his face. 'I don't remember ever having my hair this long.'

Tsuna then started to examine his legs. Tsuna noticed that his right leg was bandage from the ankle to his upper leg. Tsuna winced as he felt a sharp pain from his left ankle. 'Probably not broken,' Tsuna thought, 'but definitely sprained.'

"So everything seems to be working okay; two arms, two boobs, two legs." Tsuna said out loud.

For a few seconds Tsuna was silent until a sudden thought hit him.

"Wait a second!" Tsuna screamed, "Boobs!?"

Tsuna reached up and grasped what Tsuna assumed to be C cup breasts in his hands and sweated.

'Yep these are breast,' Tsuna thought as he felt panic start to take control.

"No no no no no!" Tsuna cried out.

Taking a gulp of air Tsuna let go of his newly discover chest and reach down south.

"…It's gone?!" Tsuna cried out in shock and horror.

The discovery of Tsuna new and loss of body parts was too much for the Vongola and Tsuna fell over in a dead faint.

As the sky continued to darken the sound of footsteps could be heard approaching the prone form of Tsunayoshi Sawada. A shadow fell over Tsuna and a tall figure looked over the state of the unconscious Tsuna.

The figure let a out a sigh and cheerily said, "Look at the state your in now Tsuna-chan or should I call you Neo Vongola Primo."

I really love those fics where Tsuna ends up inhabiting the body of one of his alternate selves in an alternate universe. I have several prompts for such stories. I'm also a fan of genderbenders.

I didn't want to write a long chapter about how Tsuna had lived his life in his original universe and ended up dying. So I just made a very quick prologue to give a general idea of what happened. I'll probably throw in a few flash backs of Tsuna from his original universe.

If you have the time please Review.