The young girl Della accidentally transmigrates into a book, becoming the same-named villainous boss who dies early in the story: the witch Della. Her death will become the heroine's golden finger.
She has already been imprisoned as a suspected witch and is about to be burned at the stake.
Box of Fate: Only by winning the love of the most terrifying big shot in the story, the Arbiter, and maxing out his affection for you can you change your fate and survive.
Rule One: If your identity as a witch is exposed, you die.
Rule Two: You cannot fail the same mission more than three times.
Rule Three: Remember, you are a yandere.
A yandere!
Yandere!
Dere!
Della (flips the table): Are you ever going to stop?!
Box of Fate: Starting now, your first mission is to kiss the Arbiter.
Della: This is the first mission?
Box of Fate: It has to last longer than five minutes (munching sunflower seeds)
Are you seriously starting me off with a mission this absurd?!
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One-on-one romance. Happy ending. Sweet romance.
A heroine who acts like a yandere but is a hammy, shameless mess on the inside X a shameless hero who kills witches without batting an eye
Theme: Never give up on achieving your goal