Tsuna was sent to another parallel world after all his guardians were killed saving him and he himself was in great danger.But in this new world,a stranger replaced his spot in the lives of his friends.Can Tsuna get his 'comrades' to be his friends again?

One day, a thirteen-year-old Tsuna wakes up in a hospital to find that he's been in a coma for the past week, and that the last four years of his life were nothing but a dream; he's not the Vongola Decimo, and he...full summary inside. No pairings.

Tsuna is given another chance at life after his guardians die, in a parallel world where he is still Dame-Tsuna and someone else is the Tenth. He is a stranger to his friends and his life there is a lot more different than Tsuna had first thought.

AU. Tsuna was raised in the shadow on his twin, a twin himself raised to inherit the throne of the Vongola. But blood is still blood, and when Tsuna decides it's his time to claim back his rightful position, the flame everyone thought was non-existence will burn brighter and deadlier than a supernova.

Sawada Tsunayoshi is ordinary. Average. Not at all special in any way. So while having ties to the mafia comes as a surprise to Tsuna, the fact that his younger, more talented, more popular twin brother is chosen as the next Vongola boss doesn't. Not everyone agrees though. After all, what is a world without a proper sky?

Memory of him as Vongola Decimo is a curse and blessing for Tsuna. He is set to choose his own path, far away from mafia world with his friends. Beside, he has his twin chosen for that throne. Reborn is not sure what to think of Iemitsu's older son. There's something hidden beneath those amber eyes of the charismatic president of Namimori Gakuen. M for violence only

Reborn had never disagreed with any of the ninth's decisions, but when the Vongola boss sent him to Japan to train Sawada Tamaki, the hitman started to think that the ninth had chosen the wrong twin…