The 'kaa coils girl story' might be about a girl who has some sort of connection with 'kaa coils'. Maybe 'kaa coils' are a special object, like a type of jewelry or something related to a particular place or culture. Without more context, it's really difficult to say more.
I don't know who the main character is as I haven't heard of the 'kaa coils girl story' before. But if it's named as such, it's likely that the main character is a girl.
One great Kaa and Mowgli fanfiction is 'The Adventures of Mowgli and Kaa's Guidance'. It shows Kaa as a wise mentor to Mowgli. Another one could be 'Kaa's Secret Bond with Mowgli' which delves into their unique relationship in a very interesting way. There's also 'Mowgli and Kaa: A New Chapter' that takes their story in a fresh and exciting direction.
Well, obviously the main characters are Kaa and Mowgli. Kaa is the sly and intelligent snake, known for his hypnotic powers. Mowgli is the man - cub, who is trying to find his place in the jungle. Their interactions form the core of the fanfic.
Fanfiction is full of all kinds of unique ideas, but 'female kaa eats mowgli' is a very specific and somewhat dark concept. It's not likely to be a common type of fanfiction. You could try looking on large fanfiction archives, but don't be too surprised if you don't find much. Maybe start with well - known platforms like Archive of Our Own or FanFiction.net and use their search functions to look for it.
A common and interesting plotline is Kaa using his hypnotic abilities to protect Mowgli from danger. For example, in some fanfics, Kaa hypnotizes the other animals to keep them from harming Mowgli. Another is when Mowgli discovers Kaa's hidden knowledge of the jungle's secrets. It makes for a great adventure as they explore together.
One interesting Kaa loves Mowgli fanfiction could be one where Kaa protects Mowgli from other jungle threats in a more affectionate way than in the original story. Kaa's unique abilities, like its hypnotic powers, could be used to create a bond with Mowgli that goes beyond a simple friendship.
One possible plot could be that Kaa, the snake, becomes an unexpected mentor to Mowgli. Kaa could teach Mowgli about the hidden secrets of the jungle that no other animal knows. For example, the ancient paths that lead to magical places. Mowgli, in turn, could help Kaa understand the ways of man a bit more, creating a unique bond between them.
In some fanfictions, it develops as a sign of affection. Kaa, being a complex character, shows its fondness for Mowgli through these kisses, which might be a way to comfort him in the dangerous jungle.
One interesting story could be where Kaa's kisses on Mowgli are a form of protection in the jungle. Kaa, with its wisdom, uses the kisses as a way to mark Mowgli as under its watch, scaring away other predators.