In the fanfic, perhaps Naruto teams up with some unexpected allies to fight Madara. For example, he could join forces with some of the previous Hokages who are still able to lend their strength in the spirit world. Together, they come up with a strategy that involves using Naruto as a distraction while the others work on sealing Madara's power.
Well, one possible plot could be that Naruto discovers a new jutsu specifically designed to counter Madara's powerful Sharingan abilities. This jutsu might be related to the Sage of Six Paths' power that he already has. With this new power, Naruto engages in a series of intense battles with Madara, each time getting closer to figuring out Madara's weaknesses.
The fanfic could also focus on a more psychological battle between Naruto and Madara. Naruto, being the optimist he is, tries to reach out to the good in Madara. He believes that there's still a part of Madara that can be redeemed. So, instead of just fighting physically, Naruto also tries to have conversations with Madara during the battle, which adds an interesting layer to the fight.
The best chapter pointer here is Chapter 174, "Such a Melodrama, Love Watching It". It opens with Does Young Master Jiang really care why I would come here? and closes on She knows the camera is on her, how can she still..." Jiang Li glanced at....
A practical answer is Chapter 164, because it turns the idea into a concrete scene. The chapter opens with Damn, the production team is so shady, they're still doing a live..., adds pressure through Let's congratulate Jiang Yan for getting— a one-point card!" Jiang Yan: ?, and ends on The current.
A practical answer is Chapter 151, because it turns the idea into a concrete scene. The chapter opens with Now it was Zhang Cheng's turn to be confused., adds pressure through going to be able to stay after all?, and ends on I will have my assistant pay the bill..
The best chapter pointer here is Chapter 138, "From now on, let's get to know each other again". It opens with Is there such a good deal? and closes on Could it be that the poison also had a side effect of making a person more....
If you want the clearest chapter reference, go to Chapter 126. Early on, Wen Jiaojiao initially wanted to cause trouble.; later, the chapter leans on But when her gaze swept around and landed on Jiang Li, who was standing at....
The best chapter pointer here is Chapter 119, "Wen Jiaojiao is Poisoned!". It opens with What is Princess Wen talking about? and closes on For some reason, he always felt there was a mysteriously calming power....
The best chapter pointer here is Chapter 180, "West District Police Station Steps In!". It opens with In the end, everyone received gifts that were completely opposite to what... and closes on she simply didn't want to associate with the so-called protagonist of the....
A practical answer is Chapter 158, because it turns the idea into a concrete scene. The chapter opens with Reluctantly, Jiang Yan had no choice but to forcibly join the group for..., adds pressure through Don't make me laugh, Jiang Li looks better even without makeup than she..., and ends on we're.
The best chapter pointer here is Chapter 172, "Shang Shaojing is Here Too?!". It opens with Not only Shu Yan, but the entire internet was shocked when they saw Su... and closes on Where's the chaotic scene I was anticipating?.
Look to Chapter 159 for the clearest answer. It begins with Seeing the red light of the camera turn on, Su Yinwan looked at the..., keeps building through Sorry, director, it was my staff who didn't arrange things well, that's..., and lands on Shang Shaobai, who was browsing through files.