Luciel, the 'Crystal Fairy' who creates jewels when she feels strong emotions, has been regressed into the past only after being used and killed.
"This time I will never live like the past life!"
To avoid the worst future, she proposes a contract marriage to the empire’s most villainous family. But something seems strange. It was definitely supposed to start off as a serious deal…
"How about being my daughter instead of Amy daughter-in-law?"
"I always wanted a granddaughter, and she’s perfect."
"When I grow up, I’ll marry my Sister-in-law!"
Why are they treating me like this, if they're supposed to be a villainous family?
Moreover,
"Whether it's jewels or flowers, it doesn’t matter to me what you make."
The Grim Reaper of Belstein, a man who ruined her past life, smiles with a youthful face.
"I’ll chase you to the ends of the earth if you ever try to escape my sight, Luciel."