The plot could also involve some sort of misunderstanding. For example, Sasayan is seen with another girl by Natsume, and she gets jealous and starts to avoid him. Sasayan, on the other hand, has no idea what's going on. It could lead to a lot of angst and drama as Sasayan tries to figure out why Natsume is acting so strangely. Eventually, after some miscommunications and heartache, they clear up the misunderstanding and their relationship becomes even stronger.
You can try looking on fanfiction websites like FanFiction.net or Archive of Our Own. These platforms usually have a large collection of fanfictions for various anime and manga series, including 'My Little Monster'. Just use the search function and type in 'Sasayan x Natsume' to see if there are any relevant fanfictions.
One common theme could be their relationship development. It might explore how their feelings for each other grow and change over time. Another theme could be their shared experiences and how those experiences bring them closer together in the fanfiction world.
A really interesting plot could be that Natsume and Mi accidentally swap bodies. This would create a lot of comical situations as they try to adjust to living in each other's shoes. They would have to deal with each other's friends and family while also trying to figure out how to swap back. In the process, they might gain a new perspective on each other's lives and become even closer friends.
I'm sorry, but I don't have specific sasayan and natsume lemon fanfiction to recommend directly. You can try searching on fanfiction platforms like Archive of Our Own. There might be a variety of works related to them.
Their relationship could develop through shared hobbies. For example, if they both like painting, they could start painting together more often, and this would strengthen their bond. They might also develop their relationship through helping each other out in school. If one is having trouble with a subject, the other could tutor them.
One possible plot could be that they face unexpected pregnancy. They initially panic but then slowly embrace the idea. Natsume becomes over - protective of Mikan, and they have to deal with the reactions of their friends and family. Maybe they decide to move to a quiet place to start their new family life.
Well, perhaps the Crystalist ponies are in need of some special kind of training. Naruto, being an experienced ninja, offers to train them in his unique combat techniques. In return, the ponies teach Naruto about their magic. As they train together, they form strong bonds and face challenges from other ponies who are skeptical of Naruto's presence. And then they have to prove that their combined skills can be used for the greater good of both worlds.
One possible plot could be that Naruto somehow gets transported to the My Little Pony world where he meets Chrysalis. Chrysalis might initially see Naruto as a threat or a tool to achieve her own goals of ruling. Naruto, with his ninja skills and determination, could try to stop Chrysalis from causing chaos in the pony world. He might also form alliances with some of the ponies who recognize his good intentions.
In this fanfiction, Fluttershy could be on one of her nature walks when she senses an unusual presence, which turns out to be Slenderman. Since Fluttershy has a way with all creatures, she attempts to communicate with him. Slenderman, who is usually a menacing figure, is intrigued by Fluttershy's lack of fear (or at least her attempt to hide it). Their story could develop as they explore each other's worlds. Fluttershy might introduce Slenderman to her animal friends, and he could show her the more mysterious and spooky parts of his realm. This interaction could lead to a transformation in both characters. Slenderman could become less of a fearsome entity, and Fluttershy could gain more confidence in dealing with the unknown.
Fanfiction about Matoba and Natsume in Natsume Yuujinchou often explores their complex relationship. It might show how Matoba, with his rather mysterious and sometimes morally ambiguous nature, interacts with Natsume, who is kind - hearted and has the ability to see spirits. Some fanfictions could focus on their potential friendship development, despite their initial differences and the wariness Natsume has towards Matoba due to his methods of dealing with spirits.