Another option is to check out dedicated K - drama fan communities. Since these characters might be from a K - drama, fans in those communities often share or write fanfictions. You could join groups on social media platforms like Facebook or Reddit that are focused on the show the characters are from and ask for any Kim Tak Goo and Shin Yoo Kyung fanfiction.
One popular theme is the development of their relationship. Writers often explore how their relationship might grow, from initial acquaintance to deeper emotional connections.
Shinjo Masayuki was a Japanese manga that told the story of Shinjo Masayuki, a high school student with magical abilities. After he accidentally obtained the ability to freely manipulate water, he had various encounters with various characters in school and in his daily life. The manga was released in 2009 and is still being released.
One great 'kim dokja x yoo jonghyuk fanfic' is 'The Journey Together'. It focuses on their adventures in different dimensions. The author does an amazing job of portraying their relationship dynamics, from their initial distrust to a deep bond of friendship.
Some fanfics like 'The Eternal Alliance' have unique features. For example, it explores their relationship in a post - apocalyptic setting. This gives a whole new context to their bond. They have to rely on each other more than ever, and it shows how their personalities complement each other in a harsh world.
The appeal also lies in the fact that fans can expand on the storylines that were not fully explored in the original. For example, they can give more depth to the relationship between Yoo Shin Ae and Yeong Gi, or create alternate universes where things happen differently. This gives fans a sense of creative control and the ability to see the characters in new lights.
Since I don't know the actual 'kim kyung soo full moon story', I can't determine its significance. Maybe it has a special meaning for Kim Kyung Soo or a small group of people who are related to it.
Another theme could be friendship. Some fanfictions might focus on how their friendship develops and how it affects the story and other characters around them. For example, they might face challenges together as friends and grow closer through those experiences.
Love is a very common theme. Writers often explore how lee shin and shin chae kyeong fall in love, or how their love overcomes various obstacles. Another common theme is friendship, as their relationship might start as friends and then develop into something more.
I'm sorry, I haven't heard of the 'kim kyung soo full moon story' specifically. It could be a very personal or a regional story that not many people know about.