Well, this kind of fanfiction could start with Marinette making a mistake while using the Miraculous. Then she finds herself in the form of a Kwami. She might be really tiny and have to find ways to get around. She could hitch rides on people's shoulders or use her small size to her advantage when it comes to spying on Hawk Moth. And she would definitely have to deal with the fact that she can't just transform back into her normal self right away, leading to all sorts of comical and tense situations.
Definitely not true. Rikki Tikki Tavi is a work of fiction. It was crafted to bring adventure and imagination to the readers, not based on real events or people.
The potential for character development and new power dynamics could be really cool. Seeing how the characters handle having different kwamis and the challenges that come with it would be exciting.
One possible fanfiction could be about Marinette's daily life with Tikki. For example, Marinette could be having a tough day at school, getting bullied by Chloe. Tikki, being her kwami, tries to cheer her up by suggesting they make some special macarons. They then spend the evening in Marinette's room, sharing stories and laughing, which helps Marinette forget about her bad day.
In 'Rikki Tikki Tavi', Rikki Tikki has to face and defeat two snakes to keep the human family safe. There's a lot of tension and excitement as he shows his courage and skills.
The main conflict in 'Rikki Tikki Tavi' is between the mongoose Rikki Tikki and the snakes Nag and Nagaina, who threaten the safety of the human family and Rikki's new home.