Plot:

AU. Ten years later, Sawada Tsunayuki had defeated Byakuran. But then the Gesso family boss had something under his sleeve. By going back ten years, he plans to corrupt the ten year younger boss.

Flame of Time:

Ten Years Later

"It's all over now, Byakuran" a woman with long spiky brown hair said, standing in front of the white haired man. Her guardians were behind her, holding their weapons with their rings on fire. The young woman's dying will flame subsided, her eyes returned to her soft brown ones. "…Just give up now… Byakuran" she said, turning around to face her guardians with a smile. "Let's go back" she said.

"You're not going to finish him off, hime-san?" Rokudo Mukuro asked, a bit surprised at his boss' actions.

"Everyone has something to live for, Mukuro" she said "… and I don't want to kill…"

"…Then let me bite that herbivore to death…"

"H-hibari-san!"

"This will be your biggest mistake Vongola Decimo hime" everyone's eyes widened when they heard Byakuran. What happened next was too fast to comprehend. There was a loud gunshot, a puff of smoke surrounded the Gesso family boss, and Sawada Tsunayuki collapsed in front of her guardians.

"Boss!" "Tenth!" "Tsuna!" "Sawada!" Four voices cried out at once as their boss fell, nearly hitting the ground, caught by her very own Cloud Guardian. Hibari Kyouya's gray orbs narrowed at the woman he caught. He looked up to see that the white haired boss of the Gesso family was gone.

Vongola Base

Tsunayuki was paler than usual, she wore an oxygen mask for it was getting difficult to breathe, as she lay on the hospital bed. It seemed like forever when they rushed her to the base. Tsuna was in critical condition, but the funny part was that she hadn't had any serious injuries. No, there was nothing wrong internally and externally.

Only one thing lingered on her guardians' minds: What the hell did Byakuran do?

A few minutes later, Reborn arrived. He entered Tsuna's room and glared at his pupil, who managed to smile back albeit weakly.

"Re…born…" Tsuna said, her voice hoarse. "Byakuran's… plan… go… back… ten… years…" each word held pain. Each word was slowly killing her.

"I see…" the spiky haired hitman, lowered his fedora hat. "Don't speak Dame-Tsuna, unless you want to die quickly" the woman nodded "I shall speak to your guardians" he said before turning to take his leave "… and Tsuna…" he smirked as he reached out to open the door "…don't die easily, or else you won't get to confess to him. You've been keeping that a secret since middle school"

Tsuna smiled a bit 'That Reborn…' she thought, before closing her eyes to rest. Oblivious to her Guardians that were outside her room and were listening to what Reborn had said.

"So who were you talking about, Reborn-san?" Gokudera Hayato asked, curiously, when Reborn got out of the room. "Who is the person Tenth likes?"

"Who knows?" Reborn said with a shrug and a wide smirk. "Back to business…" the hitman became serious once more. "Byakuran's plan is to go back ten years and possibly kidnap Dame-Tsuna of ten years ago so that this wouldn't happen"

"That bas—" the smoke bomb was cut off when three figures arrived.

"Reborn-san!" Irie Shouichi, Spanner and Gianini appeared. "We came as fast as we could" Irie said, still panting "Sawada Tsunayuki-san… is…"

"It seems that someone wants to interfere with the past" Reborn muttered, raising his fedora hat slightly to look at the three people before him.

"Ten years back…?" Irie asked "What do you suggest we do?"

Reborn smirked "What else? Let the guardians go back to chase Byakuran"

"What?" everyone cried, well almost everyone "Shouldn't that alter everything?"

Reborn glared at them all "Or would you prefer your precious boss to fall into the hands of that Mafioso?" only silence gave a reply. "Just as I thought"

I might not continue this. I'm not really good at writing these kind of stuff and something just popped in my head. So if you want to continue this, please tell me. I won't bite, really. Just tell me if you want to continue the fic.