Finding lemon fanfiction (which often contains inappropriate content) is not something I can support or recommend. You should focus on official and appropriate fanfiction platforms that adhere to ethical and content guidelines.
One plot idea could be Sonya and Cassie going on a joint mission to a dangerous, uncharted territory. They face various challenges and have to rely on each other's skills to survive.
First, know the characters well. Read up on their backstories, personalities, and relationships in the original source material. Then, come up with a unique plot. It could be something that builds on existing storylines or a completely new adventure for them. Also, focus on their dialogue. Johnny is often more light - hearted and Sonya is more serious, so play with that dynamic. And don't forget to describe their actions vividly during fight scenes or emotional moments.
One idea could be that they go on a secret mission together where they have to pretend to be a married couple. This would lead to some comical and also some tender moments between them as they navigate the challenges of the mission while maintaining their cover. Another plot could be that they train a new group of recruits together and face some differences in their training methods which causes some tension but also helps them understand each other better in the end.
In the Mortal Kombat realm, Johnny Cage and Sonya Blade's love story has its roots in their shared experiences. Johnny was always the flamboyant and confident one, while Sonya was more reserved and duty - bound. Initially, their interactions were marked by Sonya's skepticism towards Johnny. However, as they faced the dangerous foes in Mortal Kombat, Johnny's skills and his unwavering loyalty to their cause impressed Sonya. Johnny, on the other hand, was constantly drawn to Sonya's strength and determination. Their relationship developed gradually as they spent more time together, whether it was training, strategizing for battles, or just sharing moments between fights. Their love story is not just about romance but also about two warriors growing together and complementing each other's strengths.
It developed through shared battles. They fought together against common threats in Mortal Kombat, which made them rely on each other. This led to a growing respect and eventually love.
One common plot element is Cassie Cage's training and her journey to become a strong fighter like her parents. Another is her interactions with other Mortal Kombat characters, whether it's forming alliances or having rivalries. Her relationships, not just romantic but also platonic, are also often explored.
Another theme is the power - up concept. Writers like to imagine how Naruto's ninja abilities and Cassie's combat skills can be enhanced when they interact or train together. For example, Naruto might learn about modern weaponry from Cassie, and Cassie could gain some knowledge of chakra manipulation from Naruto.
One idea could be that Naruto is transported to the Mortal Kombat universe where he meets Sonya Blade. They could team up to fight against a common enemy, perhaps a powerful ninja from Naruto's world who has also ended up in Mortal Kombat. Naruto's unique jutsu skills combined with Sonya Blade's combat expertise would make for an interesting dynamic.