After Izuna Uchiha's last breath he had awaken in a new body as Uchiha Tetsuya. There is a girl who also gotten reborn into Naruto Uzumaki but as Uzumaki Hoshi. Hoshi's past life is Tsukiko Kuchiki the younger sister of Rukia Kuchiki but adopted brother of Byakuya. Hoshi normally stay away from the village and lives in the forest or train to best kunoichi. But the shinigamis back in Gotei 13 found out that Tsukiko Kuchiki is alive but reincarnated which makes both Rukia and Byakuya happy.