No, it is completely inappropriate. Teaching a little sister about sex stories is not only unethical but can also have a very negative impact on her mental and emotional development. Children at a young age are not ready to be exposed to such adult - related topics.
No. 'Little sister sex fanfiction' involves inappropriate and often unethical themes. Incestuous or sexualized content about a younger sister figure is not acceptable in a moral and ethical society.
No, it is completely inappropriate. Little sisters are in a stage of innocent growth, and such topics are not suitable for them at all. These stories are adult - related and can have a very negative impact on their mental and physical development, including causing early sexual awareness in an improper way and potential psychological harm.
No. Such a topic involves inappropriate and unethical content, especially when it may imply sexual situations related to a family member. We should stay away from any form of inappropriate or immoral topics.