Murimchoegang Namgungsega Mangnaettarimnida

Hui-Ran used to be the disgrace of House Namgung, shunned by all, including her siblings. But after political intrigue destroys her family, Hui-Ran dies trying to avenge them. All seems lost until she reawakens in the past... as an adorable baby! But how can she help anyone in a baby’s body? And why are her siblings being so nice to her? Time has been reset—using her knowledge of the future, Hui-Ran must rewrite history and thwart the sinister dissidents who seek Namgung’s downfall.

(Source: Tapas, edited)