After I Became the Younger Sister of the Heroine in a Tragic Romance

The Male Lead Thinks He Sees the Female Lead as a Little Sister, Then Realizes His True Feelings

Nothing too angsty!! The male lead doesn't have to reject the female lead when she confesses. It could be like Dada La Ai's "Sweetheart, So Clingy", or the male lead could genuinely see her as a little sister at first, then develop romantic feelings.

A Period Novel Where the Heroine Transmigrates Into the Original Heroine's Younger Sister

Transmigrate into a Book as the Heroine’s Younger Sister!

Reborn as the female lead's younger sister! A transmigrate-into-a-book story with everyone doting on her.