A Strange But Effective Villainess Life

Kiana, the troublemaker of the Prelai duchy.
I was about to give up my life as a villainess and be reborn as a new person.
Until one day, the family was hanged for treason.
‘There’s no need to kill me, who ran away from home 7 years ago and is only doing research in the countryside!’
The moment I realized that the academy, who said that I was a genius and would treat like a family, betrayed me, and that treason was also falsely accused by someone…
Due to a mysterious power, I returned to a year ago!
“I can’t help it. Now that it’s like this, I, who is smart and strong, has no choice but to save the family.”
There were two things to do for the family.
“Will I be of help to you someday too?”
“I tried to save him because he is precious to my grandfather.”
Restoring the relationship with the family, which was a mess, and…
“Please pretend to be in a relationship with me externally.”
Holding hands with ‘that man’.
Oh, before that. Pouring a water bottle over the dean’s head during the lecture, I said,
“This is gravity.” Get revenge on those academy guys who have no morals.
Kiana, who came back smarter and more vicious.