One interesting Naruto and Mikan fanfiction could be a story where Mikan ends up in the Naruto world and has to learn ninja skills. She might start as a clumsy outsider but then gradually adapts and becomes friends with Naruto and his friends. They could go on adventures together, like facing a new and powerful enemy that requires both Mikan's unique abilities and the ninja skills of Naruto's group.
Another idea for a Naruto and Mikan fanfiction is a time - travel one. Maybe Mikan travels back in time to the early days of Naruto's life. She could have knowledge of future events and tries to change things for the better. Along the way, she and Naruto develop a deep friendship, and she also helps him train in unique ways that no one else in the Naruto world has thought of before.
Perhaps in the fanfiction, the kiss is a spur - of - the - moment thing during a dangerous situation. For example, they are in a battle against some dark forces. Natsume, thinking they might not survive, impulsively kisses Mikan. This then gives them new strength and determination to fight on and overcome the danger.
I'm not sure specifically about 'lemon' fanfictions (which often imply inappropriate content). However, there are likely many sweet and engaging fanfictions about Mikan and Natsume in general. You could try looking on fanfiction platforms like Archive of Our Own, but focus on the ones that are rated appropriately.
One idea could be exploring how they adapt to the news. Mikan might be initially scared but then excited about the new life. Natsume could be overprotective, making sure Mikan is always comfortable and safe. Another plot could involve their friends' reactions, like how they support or are shocked by the pregnancy.
One idea could be Natsume and Mikan getting lost in the Forbidden Forest in Alice Academy. They have to rely on each other's unique Alice abilities to find their way out. Another plot could be a time - travel scenario where they are sent back to the founding days of the academy and have to figure out how to return to their own time while also uncovering secrets about the academy's past. And a third idea is a body - swap situation where Natsume and Mikan swap bodies and have to deal with the daily life and challenges of being in each other's shoes.
One plot could be that an evil organization creates a clone of Mikan. Natsume has to figure out which is the real Mikan. This leads to a lot of confusion and also some moments where he realizes how much he truly knows and cares about the real Mikan. Another idea is that Natsume and Mikan get trapped in a dream world created by a powerful Alice user. In this world, their deepest desires and fears are manifested. They have to work together to break free from this world, which involves facing their own insecurities. And for a third plot, there could be a story where Mikan discovers she has a rare and powerful secondary Alice that only Natsume can help her control. This creates a new dynamic in their relationship as they train together to master this new power.
One great fanfiction could be about Mikan and Natsume's first adventure outside the academy grounds. It might explore how they rely on each other's unique abilities to overcome challenges.
Obviously Naruto himself is a must - include. His determination and his never - give - up attitude can add a lot of depth to the story. Also, Sakura from Naruto can be a great addition. She can provide some medical knowledge which could be useful in the story. And for Mikan's side, her friends from her own world like Hotaru can be included. Hotaru's intelligence and her gadgets can create interesting plot points when combined with the ninja world.
One interesting Naruto fanfiction could be those that explore an alternate universe where Naruto becomes a villain. It flips the whole story on its head and shows a different side of the characters. Another type is the ones that focus on Naruto's relationships in a more in - depth way, like his friendship with Sasuke evolving in unexpected ways.
One interesting Naruto fanfiction could be about Naruto learning a new and extremely powerful jutsu from an ancient scroll he discovers. This jutsu gives him an edge in battles against powerful foes like Madara. Another could be a story where Naruto travels to a different dimension and has to team up with alternate versions of his friends to save both worlds.
One interesting Naruto fanfiction could be about Naruto having a secret power that he discovers during a mission in a hidden land. This power could change the way he approaches battles and his relationships with his friends.