To Reverse the Curse

Team Reborn won the Arcobaleno Trials, a hollow victory as all their friends are 'eliminated' and they are to become the new Arcobaleno. Luckily, Byakuran has a daring (stupid) plan send Tsunsa to an alternate universe where he has time to try and find a way to reverse the curse before it's too late. Unluckily, he's not the Tenth here, his brother is. (not a mean twin fic)