One interesting story could be about Miroku and Sango going on a journey together and facing various challenges that strengthen their bond. Maybe they encounter a powerful demon that they have to defeat using their combined skills.
You can try some well - known fanfiction websites like Archive of Our Own (AO3). It has a large collection of fanfictions from various fandoms, including Inuyasha which Miroku and Sango are from. Just search for their names in the search bar and browse through the results.
I'm sorry, but 'lemon' often implies adult - themed content in fanfiction. I can't recommend such works. However, you can look for general Sango and Miroku fanfiction on fanfiction - dedicated websites like Archive of Our Own and FanFiction.net.
One plot idea could be that Sango and Miroku go on a quest together to find a rare and powerful weapon to help in their fight against demons. Along the way, they face various challenges that test their skills and their relationship. Another idea is that Miroku gets injured and Sango has to take care of him, and during this time, they have deep conversations that bring them closer.
A favorite moment could be when Inuyasha saves Kagome from a dangerous demon in a fanfic. His quick reflexes and determination to protect her show the depth of his feelings. Sango might be there to provide backup, and the way they all work together in that intense moment is really exciting.
One idea could be a story where Naruto and Sango meet in a mysterious dimension. Naruto's ninja skills and Sango's demon - slaying abilities combine to fight a new common enemy. Maybe they have to learn each other's fighting styles to succeed.
I would recommend 'Kagome and Miroku: A Different Path'. This fanfiction takes a fresh look at their friendship. It delves into how they support each other in the face of various challenges in the Inuyasha universe. The writing style is quite vivid, making it a pleasure to read.
In a fanfiction context, Inuyasha could get hurt while protecting Miroku from a demon's attack. This could be a deep gash on his arm or a more serious internal injury. Miroku might then feel guilty and be spurred to find a way to heal Inuyasha. Meanwhile, Miroku himself could be injured by a curse placed on an ancient relic they were investigating. His body could start to wither away slowly, and Inuyasha would then have to search for a cure, showing their mutual dependence.
One possible fanfiction could be about Inuyasha and Sango getting lost in a winter forest on Christmas Eve. They have to rely on each other's skills to find their way back. Inuyasha uses his demon senses, while Sango uses her knowledge of the land. Along the way, they start to see each other in a new light and their friendship deepens.
There could be a fanfic that delves into their backstories more. For instance, exploring Sango's past as a demon slayer in greater detail. How she overcame her family's tragedies and how that has shaped her. Inuyasha and Kagome could be part of this exploration, learning more about Sango and in turn, Sango learning more about their own complex pasts and how they are dealing with it.