One possible fanfic could be where Zuko gets injured while protecting Katara from a group of bandits. Katara then uses her waterbending skills to heal him as much as she can, while also realizing her growing feelings for him during this intense moment.
One common plotline is his friends or allies coming to his aid. For example, in some fanfictions, Aang might use his healing abilities to help Zuko. This can lead to a deeper bond between them.
One popular fanfic could be where Zuko gets injured during a battle with the Fire Nation's enemies. Maybe he's outnumbered while trying to protect someone. The author might describe his pain and struggle in detail, as well as how his friends or allies react to his injury. It could be a great opportunity for character development and exploring his relationships.
A great one is 'Zuko's Trial by Fire'. In this fanfic, Zuko is injured in a fight against a powerful dark bender. The story focuses on his internal struggle as he tries to heal both physically and mentally. It's really interesting how the author portrays his pain and his determination to get back on his feet.
A plot could be that Katara is injured during a training session gone wrong. Zuko, having learned some basic healing techniques from the Fire Nation, tries to help her. This leads to a moment of vulnerability between them as Katara has to trust Zuko completely. Their relationship blossoms as he nurses her back to health.
You can try websites like Archive of Our Own (AO3). It has a large collection of fanfictions. Just search for 'Zuko injured' in the search bar, and it will show you relevant stories.
Zuko's complexity makes him so interesting in these fanfictions. He has a troubled past which has shaped him, but he is constantly evolving. His ability to show vulnerability in front of the reader is another great trait. It allows for a deeper emotional connection between him and the reader, as seen in stories where he opens up about his insecurities and fears.
In 'Ozai Hurts Zuko' fanfictions, Zuko develops by facing his inner demons. The harm from Ozai makes him re - evaluate his life. He might become more empathetic towards others who have suffered, and this changes his outlook on the world. He also gains a new sense of self - identity, separate from what his father wanted him to be.
There's a possibility that Zuko would meet his grandfather. His grandfather's actions and decisions might have influenced the path the Fire Nation took towards war. By meeting him, Zuko could try to sway his grandfather's views and change the future of the Fire Nation at its root.