There are quite a few out there. Some might focus on their unique relationship dynamics, exploring how their personalities would interact in a romantic context. You can find them on various fanfic platforms by simply searching for'mako and iroh gay fanfic'.
Some smaller, more niche fanfic communities dedicated to the relevant fandom might also have such fanfics. You can search for these communities on social media platforms or specialized fanfic forums and then look for the mako and iroh gay fanfic within them.
Uncle Iroh's life was a long and eventful one. He started as a respected general in the Fire Nation. But his life took a tragic turn when his son passed away. This made him reevaluate his beliefs and values. He became a wanderer, exploring the world. He had many adventures and learned a great deal about the elements and the balance they represent. In his interactions with Zuko, he was always patient and understanding. He taught Zuko about the true meaning of family, loyalty, and how to be a good leader. His tea - making skills were also a big part of his character, representing his calm and collected demeanor.
Uncle Iroh has a complex back story. He was once a powerful general but experienced many losses and hardships that led him to become a more peaceful and wise figure.
One important event was the death of his son, which changed his perspective on war. Another was his travels around the world, which broadened his knowledge. Also, his time mentoring Zuko was crucial.
The 'uncle iroh little soldier boy story' could be a heart - warming or action - packed tale. It might start with the little soldier boy being in a tough situation, perhaps lost or in danger. Uncle Iroh, with his kind heart and vast experience, comes to his rescue. As they interact, Uncle Iroh could share stories from his own past, about his days as a warrior. He could teach the boy about strategy, but also about compassion. The story could be about the growth of the little boy under Uncle Iroh's tutelage, learning to be a better fighter not just in terms of physical combat but also in terms of being a good person.
Since I'm not well - versed in 'Uncle Shen Mako Mermaids' fan fiction, I'll make some educated guesses. Family relationships could be a theme, maybe how Uncle Shen relates to the mermaid family or something similar. Also, the idea of discovery - like the mermaids discovering new things in the human world or vice versa. And of course, there could be themes of love and loyalty among the characters in the fan fictions.
I'm not sure exactly which 'Uncle Shen Mako Mermaids' fan fictions are out there. You could try searching on fan fiction websites like Archive of Our Own. They usually have a wide variety of fan - created stories for different fandoms.