I Set Her Up and Seduced the Villain
Just before the weapons design competition, my design schematics mysteriously go missing.
Since I no longer have anything to submit, I'm disqualified from the competition. Meanwhile, my older sister, Camilla Cassano, steals the show with my designs. She gets what she wants, which is to marry the next don of the Carbone family—and the man I've had a crush on since I was a child—Leon Carbone.
When she brags about it to me, I don't kick up a fuss. Instead, I calmly wish her the best.
In my previous life, I'd chosen to expose her on the spot. I seized back the glory that was meant to be mine and married Leon.
I thought that was the start of my happiness, but it turned out to be the beginning