Maybe Zuko has his own goals that don't involve chasing Aang. He could be more focused on redeeming himself in other ways, like helping the Fire Nation people or learning about different cultures without the need to pursue Aang.
In this fanfiction, Zuko may have a new perspective on the whole situation. He might have met someone or had an experience that made him see that chasing Aang is not the right way. Perhaps he discovers that there are other threats or issues in the world that are more important to address. So, rather than wasting his energy on chasing Aang, he turns his attention to these other matters. He could also be influenced by new friendships or alliances that convince him to abandon the idea of chasing Aang.
Chapter 882, "Can you still not forget your first love?", is the clearest early answer because it turns Lin Jingshan's situation into a concrete plot event. It opens with Seeing the evidence Lin Jingshan presented, Xu Mei's body trembled...
A practical answer is Chapter 24, because it turns the idea into a concrete scene. The chapter opens with Not only that, even the non-mainstream photos she had previously posted on..., adds pressure through Just because of his arrival, both were severely affected by public..., and ends on Shi Xu.
A practical answer is Chapter 8, because it turns the idea into a concrete scene. The chapter opens with The resentment that had barely calmed among the crowd surged back two..., adds pressure through Why keep harping on the fact that he wasn't a decent man?, and ends on Other people with a.
Chapter 725, "Illegitimate Children Can Also Inherit Property!", is the clearest early answer because it turns Jiang Yan's situation into a concrete plot event. The chapter gives readers a real answer by opening on Jiang Li seemed to have anticipated this answer and squinted, smiling...
Chapter 834, "Where Did This Monster Come From?!", is the clearest early answer because it turns Shang Shuyue's situation into a concrete plot event. The chapter turns that into something concrete by moving from After just a few days on the movie set, Jiang Yan returned home with...
The best chapter pointer here is Chapter 19, "I dare you to touch her!". It opens with What criminal law is this or that, this was originally none of your... and closes on Please give me Miss Su's birthdate." Mr..
If you want the clearest chapter reference, go to Chapter 48. Early on, He Yun felt guilty for initially ignoring Jiang Li on purpose, and with...; later, the chapter leans on That's why he gave her the Perfect Card right off the bat..
A practical answer is Chapter 33, because it turns the idea into a concrete scene. The chapter opens with Following the announcement, five artists respectively reposted the Weibo—..., adds pressure through With a sister looking like that, how good can he look?], and ends on Although Su Yinwan was.
Chapter 858, "If You Dare, Take It", is the clearest early answer because it turns Shuiyun Temple's situation into a concrete plot event.
Chapter 740, "Someone Who Can Live Through the Days", is the clearest early answer because it turns Yu Fei's situation into a concrete plot event. Early on, Fang Kai sprang to life when he heard this, immediately setting his....