Hashi and Madara seem to mirror Naruto and Sasuke in my opinion. Two "friends" who are on opposite sides of the battle field, who are equal. One walks a path of peace and the other anger(War)(Madara)/(Revenge)(Sasuke))
Sasuke and Madara both want ultimate power. Sasuke wanted Mangekyo by killing Naruto and Madara seems to have wanted Hashi's cells. Both naruto and Hashi wanted to save their friend from darkness, and both failed to do that,
Also, we've seen that Naruto and Sasuke/Madara and Hashi fought at the Final Valley, and clashed with their ultimate attacks
Kind of a long shot based off this, but I'm thinking that the end of Hashi vs Madara will mirror Naruto vs Sasuke, being that Madara will win, but let Hashi live. But Madara will take Hashi's dna somehow and go into hiding, find the secret to the gedo mauzou and eternal tsukyomi and rinnegan
Sasuke and Madara both want ultimate power. Sasuke wanted Mangekyo by killing Naruto and Madara seems to have wanted Hashi's cells. Both naruto and Hashi wanted to save their friend from darkness, and both failed to do that,
Also, we've seen that Naruto and Sasuke/Madara and Hashi fought at the Final Valley, and clashed with their ultimate attacks
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Kind of a long shot based off this, but I'm thinking that the end of Hashi vs Madara will mirror Naruto vs Sasuke, being that Madara will win, but let Hashi live. But Madara will take Hashi's dna somehow and go into hiding, find the secret to the gedo mauzou and eternal tsukyomi and rinnegan