This is a really old fic, so just read it for fun.
Among countless parallel worlds, there's always one where Sawada Tsunayoshi never inherits the Vongola, one where Byakuran doesn't destroy the world, and one where Sawada Tsunayoshi and Byakuran are best buddies.
In Parallel World No. 10027, Byakuran attends Namimori Elementary and meets a total good-for-nothing Tsuna. The two get all tangled up with each other, and when they're 25, Byakuran finally tells Tsuna the secret he's kept hidden for so long.
Main world (the original story):
The Vongola family of ten years ago defeats Byakuran. Ten years later, everyone wakes up. Tsuna climbs out of the machine, looks at a crowd of unfamiliar faces, and blinks his guileless, rabbit-like eyes. "Who are you?"
Reborn: ...Heh. You're dead.
World No. 10027:
The Tenth Vongola boss wakes up in bed... What the hell! Why does his body ache like it's been shamefully taken apart?!
Creak, the door opens, and Byakuran walks in. Seeing the man propped against the headboard, he quickly climbs onto the bed and pulls the Tenth into his arms. The Tenth Vongola boss, stunned out of his wits, instinctively tries to ignite his flames, but...
Smack! A kiss lands on his forehead.
"Tsuna, I mean it. Marry me."
The Tenth: ...Please let me choose death.
1. CP: 10 + 10027; in the original world, all 27.
2. There may be a tiny bit of double 27 in some odd places. Please pretend you didn't see it.
3. This fic runs entirely on wild imagination, so don't worry about the plot. The whole reason the author wrote it was to have 27 hide behind Byakuran and shout, "Who are you people? I don't know you!"
Theme:
Damn Yan Gang, yawn! I want to see it too! I haven't watched Full Time, so... Sorry_(:_‖∠)_
My most adorable and aggressive one was 270! Anyway, he is going back soon. Bai Lan has a point in establishing his power, and it is also very simple to build. Anyway, Bai Zhazha died not long ago, and there are still many remnants of the party. Once they are contacted, they will become a huge power! Bai Lan who doesn't like Yu Hua Cong is too scumbag!
I have never read this kind of meme, but I actually finished it and gave the author 23333333 thumbs up~( ̄▽ ̄~)~
Bai Lanlan has become a yandere╭(°A°`)╮ Feeling sorry for A Gang QAQ
White scumbag, don't go dark anymore, it's dark enough now, and it won't be cute anymore if it gets darker! Now it's good if it's cheap, thick and perverted!
Catch bugs! After dinner with me,
27100 Come on↖(^ω^)↗
Abandon Byakuran and be with Judaime, Tsunayoshi-kun. A sudden strong feeling.
Bai Lanlan loves to watch 27 Love Confessionsヽ(゚∀゚)ノNo
I am_(:з∠)_