The fanfiction could revolve around a character who is an outcast and feels invisible in society. One day, they actually become physically invisible. This new state makes them realize how much they want to be seen and heard. They start to use their invisibility to learn the secrets and problems of the people around them. Eventually, they find a way to become visible again and use the knowledge they gained while invisible to make positive changes in their community, making friends and finding their place in the world.
One idea could be that the characters discover a magical object that makes them invisible. They then use this new - found power to solve mysteries in their town, like finding out who has been stealing from the local shops at night. They follow the thieves without being detected and finally expose them, becoming local heroes.
One plot idea could be that the characters discover the invisibility power has a time limit and they have to complete a mission before they become visible again. For example, they need to retrieve a stolen artifact from a heavily guarded place.
A popular choice could be a girl named Lily. She is curious and brave. When she becomes invisible, she decides to explore the secrets of her town that no one else has been able to. She might find out that there are some spooky things going on underground.
For creating interesting characters in this fanfiction, start with their backstories. If a character has a history of being overlooked or ignored, it gives a good reason for them to be interested in invisibility. For example, a shy student who has always been in the background. Their reaction to becoming invisible could be very different from someone who is more outgoing. They might be more cautious while the outgoing one could be more adventurous.
One possible plot could be that they meet during a multiverse - related event. Maybe the Invisible Woman's powers get affected by some strange energy during a battle, and Peter Parker, with his spider - sense, is the only one who can detect her even when she's invisible. This leads to them getting closer and eventually falling in love and getting married.
One idea could be that Snape's invisible friend turns out to be a manifestation of his repressed childhood self. It could help him face his past traumas and insecurities.
Perhaps the Invisible Woman is on a secret mission in Spiderman's city. Spiderman gets involved when he notices some strange happenings. As they get closer to solving the mystery, they also get closer to each other. The 'lemon' aspect might involve some steamy moments where their powers play an interesting role, like the Invisible Woman using her invisibility for some flirty surprises. However, this would be a very different take from the traditional superhero stories we know.
Well, perhaps the Invisible Woman is actually a cursed being in the Naruto world. She was once a normal ninja but due to a forbidden jutsu, she became invisible. Naruto and his team take it upon themselves to find a way to reverse the curse. As they journey together, they face many challenges and also discover secrets about the origin of the jutsu that cursed her. In the process, the Invisible Woman also helps them in battles with her unique abilities.
One possible plot idea could be that Ko and Dendy team up to face a new super - villain in the city. They might start off with some misunderstandings, like Ko thinking Dendy is too bossy with her scientific approach, but then they realize they need each other's skills to defeat the villain.
A great plot for a social invisible OC in Naruto fanfiction could be that they have a unique chakra ability that is both a blessing and a curse. It makes them stand out in a way they don't want, so they try to hide it. However, a powerful enemy discovers their secret and tries to use them for their own evil purposes. The OC then has to decide whether to keep hiding or use their power to fight back. Or, the OC could be a historian of the ninja world, but because they are so quiet and unassuming, no one realizes they hold the key to an ancient prophecy that could save the village from destruction.
One idea could be exploring Addie's encounters with different historical figures in more depth. For example, how she influenced or was influenced by them during specific events. Another could be a story where she tries to find a way to reverse her curse in a new and unexpected way, perhaps with the help of a modern-day character who has some unique knowledge or ability.