The 'hurt/comfort' trope is also common. Maybe Kai gets injured during a battle, and Skylor is the one to nurse him back to health, which deepens their connection. This trope allows for a lot of emotional exploration between the two characters.
You can try searching on fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. Just type in 'Kai and Skylor' in the search bar, and it should show you relevant fanfictions.
One possible plot could be that Kai and Skylor are initially overjoyed at the news of the pregnancy. But then they face challenges like protecting their future family from the villains in Ninjago. Kai might become overly protective, while Skylor has to deal with her changing powers during pregnancy.
Their relationship would deepen. Skylor might rely more on Kai for emotional support during her pregnancy. Kai, on the other hand, would feel a greater sense of responsibility not just as a ninja but as a future father. They'd also have more private and intimate moments, sharing their hopes and dreams for their family.
The fanfic could also delve into the character development of both. Supreme Kai might help Gohan unlock new levels of his Saiyan abilities. Maybe it would show Gohan teaching Supreme Kai about the unique aspects of Earth's culture in return. This interaction could add depth to their relationship and the overall story.
One great 'Ninjago Kai x Cole fanfic' is 'Bond of Fire and Earth'. It delves deep into their relationship, showing how they support each other during tough battles. The author beautifully portrays their friendship evolving into something more meaningful over time.
One popular theme could be the idea of them having a secret relationship that they are trying to hide from the public eye. It adds an element of mystery and drama.
Friendship is a very common theme. Many fanfictions explore how their initial friendship can develop into a more profound connection over time. It could be through shared musical experiences or just spending time together off - stage.
Lemon fanfiction often contains inappropriate and non - canon content. However, in the context of Ninjago Kai x Reader, it might explore a more romantic or close relationship between Kai and the reader. But such fanfictions may deviate from the original family - friendly and action - oriented nature of the Ninjago series.
I don't think it's very popular in the mainstream Ninjago fandom. Since the Ninjago series is family - friendly, most fans are more interested in the official storylines, the battles, and the development of the ninja characters. Lemon fanfiction often contains adult - like content which goes against the general tone of the series.