It Seems Like I Got Reincarnated Into The World of a Yandere Otome Game by Hanaki Momiji

Translated from Japanese Drama Fantasy Romance School Life Harem Magic Female Protagonist Otome Game Shoujo Royalty
As a precocious child, Licorice suffers from a strange sense of deja vu. On the day her father told her about her fiancé, she realizes that her fiancé was actually a character from an otome game she once played in a previous life.
“I am the heroine’s rival from the game?
And in the bad ending, I get stabbed to death?
What a joke.”
A story in which the protagonist is determined to avoid a yandere situation.

Alternative names : Yandere-kei Otomege no Sekai ni Tensei Shite Shimatta Youdesu

01 - Fiancée and Family Arc
Volume 2
Volume 3