Well, a major theme is the struggle between love and duty. Kai is a ninja, and he has responsibilities towards Ninjago. So in many fanfictions, he has to find a balance between his love life and his duties as a ninja. Another common theme is the discovery of self. When in love, Kai often discovers new sides of himself that he didn't know before. And of course, there's the theme of friendship too, as his friends are often involved in his love story in some way.
One common theme is sacrifice. Kai often has to sacrifice his own desires or safety for the sake of his loved one. Another theme is growth. Through his love story, Kai usually grows as a character, becoming more understanding and empathetic. And the theme of loyalty is also there, as he stays loyal to his love interest no matter what challenges they face.
One common theme is adventure. Since they are set in the Ninjago world, the characters often go on adventures together and that's where their relationship grows. Another theme is the contrast between Kai's boldness and the reader's own qualities.
Friendship is a very common theme. Since Kai and Lloyd are important characters in Ninjago, many fanfictions explore how their friendship develops and endures through different challenges.
One common theme could be Kai's early days of discovery. Maybe he's just starting to show his fiery nature as a baby. Another theme might be his relationship with his family in this baby version. It could explore how his parents or siblings interacted with him. Also, it could focus on his potential as a future ninja even at such a young age.
Another theme could be emotional hurt. For example, Kai might experience betrayal by a friend or teammate, which causes him internal pain. This can add depth to the story as his emotional state affects his actions and relationships.
One great 'Ninjago Kai love story fanfiction' is 'Kai's Unseen Affection'. It beautifully portrays Kai's journey in love. Another one could be 'Love in the World of Ninjago' which shows Kai's romantic side in the context of the Ninjago universe. There's also 'Kai's Heart's Desire' that delves deep into his emotions and relationships.
The theme of self - discovery is also quite prevalent. As the characters fall in love, they often discover new sides of themselves. They might learn that they are more capable of love and vulnerability than they thought, which is an important part of their growth within the love story.
One common theme is the exploration of different relationships. For example, how Female Kai Smith interacts with the other ninja characters in new and unique ways compared to the male Kai. It could be friendship, rivalry, or even romantic relationships.
One common theme is friendship. Despite their differences, Kai and Cole are shown to be good friends. Another theme could be loyalty. They are loyal to each other and to their team. Also, growth is a theme, as they both grow as ninjas and in their relationship with each other.
One common theme is friendship. They are both ninjas in the Ninjago universe, and many fanfictions explore how their friendship develops over time, through battles and challenges they face together.
One common theme is empowerment. Since it's about a female version of Kai, it often focuses on her becoming strong and independent in a world dominated by male characters. For example, she might prove herself in battles or in solving difficult problems.