Sage reborn and the ghastly bloodline
During the last days of the war Haku was sealed by Naruko instead of passing on
Shortly after, in their final battle sasuke gives up his eyes to naruko to save her turning her into the next sage of the six paths and transporting her to a new world the laws of this new world spell many changes to edo tensei naruko and haku must survive in this new world with Naku's new hunger for Naruko’s flesh.
Biju /sage mode speech
During the war haku’s will has taken but sealed in a way he couldn’t be returned to the afterlife still left sealed even after Kabuto undid the edo tensei jutsu. When the ninja army gathered together Suna ninja Maki came to naruko and said “he wanted to see you one last time before returning to the afterlife so when this all ends unseal him and send him off” and passed her a scroll containing Edo Tensei Haku. The war continued with Naruko and Sasuke fighting to the end. But Sasuke damaged Nar