Another theme is adventure. Since Kayn is a part of the League of Legends world which is full of battles and quests, the reader can often get involved in these adventures with him. They might go on a journey to find a powerful artifact or fight against a common enemy. This gives a lot of opportunity for action - packed scenes and the development of their relationship during these dangerous situations.
There was a Kayn. He had a dream of becoming the greatest swordsman in the land. He started his journey by seeking out the best swordmasters. Along the way, he faced many challenges, from harsh weather to bandits. One time, he got into a fight with a group of very skilled thieves. Kayn was almost defeated, but he remembered his training and his dream. He managed to turn the fight around and defeat the thieves. This experience made him even more determined. He continued his journey, learning from different masters and growing stronger. Eventually, he achieved his dream and became a renowned swordsman, known for his honor and skill.
Well, in kurapika and neon fanfiction, a common theme could be the contrast in their worlds. Kurapika is from a tragic background with his clan's destruction driving him. Neon, on the other hand, is a part of a wealthy and powerful family. Fanfic writers may play with the idea of how these two from such different walks of life come to understand each other. Maybe Kurapika sees in Neon a glimmer of innocence that he wants to protect, or Neon could be intrigued by Kurapika's mystery and strength.
The most interesting one might be the story where Kayn discovers a magical amulet. One day while exploring an old ruin, he stumbles upon an amulet that gives him the ability to communicate with animals. At first, he was scared, but then he realized how useful it could be. He used this power to get help from the animals to find hidden treasures. With the treasures, he was able to improve the living conditions of his village. The story is interesting because it shows Kayn's adaptability and his willingness to embrace the unknown for the good of his people.