There could be a prophecy in both their worlds. A seer in Naruto's land predicts that he will meet a powerful queen from another dimension, and in Queen Serenity's world, there is a similar prophecy about a strange warrior from afar. This leads them on a journey to find each other.
They could meet through a magical portal. Maybe a powerful jutsu in Naruto's world goes wrong and creates a portal that leads directly to Queen Serenity's realm. Or, a magical artifact in Queen Serenity's world starts to glow and acts as a gateway to Naruto's world, pulling Naruto through.
Well, one way this could work is through some sort of multiverse or time - travel concept. Maybe in a different dimension, Naruto's origin is linked to Queen Serenity. For example, a powerful magic or jutsu could have accidentally connected their worlds, and Naruto could inherit some of the Queen's powers, like the ability to control the Silver Crystal in a new form related to chakra.
Another concept could be that Queen Serenity discovers Naruto's world and decides to send some of her magical warriors to train with the ninjas. Naruto could befriend these warriors and learn about their unique powers. In return, he could teach them some of his ninja techniques, leading to an interesting exchange of cultures and fighting styles.
A different plot could be that they meet in a dream - like state first. They have a beautiful encounter in their dreams, and then they both start looking for each other in the real world. The fanfiction could then explore how they navigate the differences between their dream interactions and real - life ones as they finally meet in person.
One storyline could be Naruto growing up in the Naruto world but having strange dreams and powers that he doesn't understand. As he gets older, he discovers his true heritage as the son of Queen Serenity. This leads to him having to travel to the Sailor Moon world to learn about his mother's legacy and gain control over his new - found powers.
Well, a unique plot could be that Naruto is sent back in time to the era of Queen Serenity. He helps her in the fight against the Dark Kingdom, using his ninja skills and knowledge. In return, Queen Serenity gives Naruto a special artifact that helps him in his own world. Or perhaps there is a prophecy that only Naruto and Queen Serenity together can fulfill, and they have to go on a quest to figure out what it means and how to do it. This could involve meeting various characters from both universes along the way.
Yes, there are many. You can start by looking on fanfiction platforms like Archive of Our Own. Just use the search terms 'Naruto and Queen Serenity' and then filter out the results that have any inappropriate or lemon - related tags. There are often great stories that focus on their interactions in a non - sexual way, perhaps in a crossover adventure or a friendship - building scenario.
They could meet through a magical portal. For example, a portal could open up in Naruto's world due to some strange jutsu gone wrong, and Rainbow Dash could fly through it while on a mission in her world. This sudden encounter would be a shock to both of them at first.
Naruto could use his talk - no - jutsu on Queen Chrysalis. He's known for convincing his enemies to change their ways. He might try to make her see the error of her ways if she's being evil in the fanfiction.
You can try searching on popular fanfiction websites like Archive of Our Own (AO3) or FanFiction.net. Just type in 'Serenity and Endymion meet' in their search bars, and you should get relevant results if there are any fanfictions with that theme.
It could be a self - made queen from a far - off land. Maybe she is a powerful magic user who has united her land through her own strength and wisdom. When she meets Naruto, she is intrigued by his unique ninja abilities and they fall in love.