Definitely Obito. Since they have a long - standing connection, it would be interesting to see how their relationship played out during Kakashi's Anbu days. Maybe Obito was still alive and had his own secret missions within the Anbu that intersected with Kakashi's.
Yamato could be a great addition. He was also part of the Anbu at some point. He could be a junior member who looks up to Kakashi and learns a lot from him. Their interactions could be used to show different aspects of the Anbu's hierarchy and training methods.
Anko could also be included. She has a wild personality, and her presence in the Anbu could create some interesting dynamics. She might be involved in some undercover work with Kakashi, and their different approaches to the mission could lead to both conflict and cooperation.
If you want the clearest chapter reference, go to Chapter 152. Early on, While most of the villagers of Chixia Village were gathered at the village...; later, the chapter leans on The unassuming structure stood out oddly against the backdrop of its....
A practical answer is Chapter 166, because it turns the idea into a concrete scene. The chapter opens with Only after everyone in the small courtyard had left, did Zhao Lang stride..., adds pressure through Fans can't bear to watch anymore.], and ends on However, after interviewing the villagers.
If you want the clearest chapter reference, go to Chapter 152. Early on, While most of the villagers of Chixia Village were gathered at the village...; later, the chapter leans on The unassuming structure stood out oddly against the backdrop of its....
A practical answer is Chapter 132, because it turns the idea into a concrete scene. The chapter opens with The new girl in the live-streaming room went crazy., adds pressure through Stay away from my fragrant and fresh Brother Daniu!] [Not only has the..., and ends on He stir-fried the other.
If you want the clearest chapter reference, go to Chapter 211. Early on, Advanced Repair was even more outrageous, costing a whole 30 points.; later, the chapter leans on Not to mention the 50 points for Supreme Repair..
Chapter 186 is the strongest chapter-level answer because it starts from Seeing Wen Jiaojiao bravely entering the pigsty, Jiang Yan couldn't stay... and follows through on And in the instant she fell, the red rope tied to Jiang Yan also broke,....
If you want the clearest chapter reference, go to Chapter 195. Early on, Jiang Yan was fully equipped and followed at the end of the team.; later, the chapter leans on He was wearing a sports suit borrowed from He Yun, his face smeared with....
A practical answer is Chapter 138, because it turns the idea into a concrete scene. The chapter opens with Is there such a good deal?, adds pressure through From now on, let's get to know each other again." "I'm Wen Jiaojiao,..., and ends on Could it be that the poison also had a side effect of.
The best chapter pointer here is Chapter 191, "Sister, Jiang Cheng is bullying me!". It opens with This change made Jiang Cheng extremely uncomfortable. and closes on Meanwhile, Jiang Shixu was staring intensely at the fragments on the floor..
The best chapter pointer here is Chapter 171, "Jiang Yan: There's a ghost!!!". It opens with The afternoon rain stopped and started again, making the air even more... and closes on They weren't any big shots; did they deserve her to personally run over to....