Mute Little Sister (Original Version of the First World)

This story was originally the first world in She's Just My Little Sister (Quick Transmigration), but was later changed to the witch younger sister.

The heroine and story setup are both different from the revised version of Little Sister. But since the mute younger sister's story was also completed in full, I've posted it here separately.

[This story was written in May 2020, while the revised She's Just My Little Sister was written in January 2023. There was a long gap between them, and the characters and stories are independent of each other.]

Theme: None