Story of a Country Girl Reincarnated as a Villainess Trying To Avoid a Bad End ~I Tried To Become Stronger Than the Last Boss Because I Don’t Want to Die~

There was a girl who lived an ordinary life and met a sudden death. She cursed her life for being boring and dying without achieving anything.
She wished for a life with a purpose, like the characters she read about in books.
And so, she was reborn. In the same world as the story she loved, as a character with a proper role. But…
Why did I have to be the villainess with only a tragic end!
Her reincarnation was as the antagonist heroine of the protagonist. She would have her fiancé stolen by the protagonist, be bullied, join forces with the Demon King, and ultimately be betrayed and killed by him.
I absolutely hated that future!
In order to live and obtain happiness, I would show everyone that I could become stronger than anyone else.
Even the Demon King, bring it on!