The protagonist, a slightly military-minded girl, suddenly realizes she's in the world of an otome game she played in her previous life—as the stereotypical villainess, no less.

In the game, the villainess was destined for ruin no matter what, but she would be different.

If she didn't want to be ruined, why not just obliterate those who sought to ruin her?!

And so, leveraging the "aptitude for magic" setting bestowed upon the villainess—the heroine's rival—the protagonist became obsessed with reproducing modern weaponry technology using magic, eventually succeeding.

The heroine? The prince? Her parents' worries? Exile?

If a bad end awaits her, then she'll simply blast her way through it with pure firepower!

\*Main story concluded!

\*Published as a book by K Ranobe Books.

\*Comic adaptation available!