She could be a new student at the ninja academy. She has big shoes to fill being Lloyd's sister. Some students are mean to her at first, thinking she'll get special treatment. But she proves herself by outperforming them in a difficult training exercise and earns their respect.
One idea could be a time - travel plot where Lloyd and Nya are sent back in time to the early days of Ninjago. They have to work together to find a way back while also ensuring that they don't accidentally change the future. Another plot could involve them getting trapped in a mysterious realm and having to rely on each other's unique skills to escape. For example, Lloyd's elemental powers and Nya's water - based abilities.
One idea could be that the reader is a new ninja - in - training and Lloyd has to mentor them. They start off with a rocky relationship but gradually grow to respect and care for each other as they face various challenges in Ninjago.
One idea could be exploring the sister's backstory in more detail. Maybe she had a special training or a hidden power that was only known to a few. Another could be a story where she gets separated from the main group and has to find her way back while facing her own personal demons.
One plot idea could be the challenges they face as a couple preparing for the baby. For example, Lloyd might be worried about protecting the reader and the unborn child from his enemies in the Ninjago world. He could start training extra hard and enlisting the help of his ninja friends to safeguard their home. Another idea is that the reader discovers some special powers within herself during the pregnancy, which are somehow related to the Ninjago realm's magic. This could lead to a whole new adventure as they try to understand and control these powers before the baby is born.
One interesting plot development could be Lloyd's struggle to regain control. As he's possessed, his friends might initially not realize it and think he's just acting out of character. Then, they gradually notice the strange behavior and start to investigate. This could lead to a race against time to save Lloyd from the possessing force.
She can be characterized as brave, just like Lloyd. Maybe she has a bit of a fiery temper, which gets her into trouble sometimes. For example, she might rush into battle without thinking when she sees her friends in danger.
One interesting fanfiction could be about Lloyd and Garmadon teaming up against an even greater evil than they've ever faced. Maybe a new dark force emerges that threatens to destroy all of Ninjago, and they have to put aside their differences and work together. Lloyd uses his newfound powers and Garmadon uses his knowledge of the dark arts in a way that benefits the good side for once.
In many Ninjago fanfictions about Lloyd's love interest, it could be someone new created by the author. For example, a mysterious girl who has special powers and meets Lloyd during one of his adventures. They start off as strangers but gradually develop feelings for each other as they face challenges together.
You could write a fanfiction where Aspheera accidentally releases an even more dangerous force while trying to regain her full power. The ninjas then have to work with her, despite their differences, to stop this new threat. This would involve a lot of character development for both the ninjas and Aspheera as they learn to trust each other.
A more relationship - centered plot could be that Pixal and Zane start to question their feelings for each other. They have always been comrades, but now they wonder if there could be something more. However, they are afraid that their relationship could affect their duties as protectors of Ninjago.