Princess Engineer

The war has ended with total victory for Tryvania empire and total annihilation of Louvremont kingdom "Grand Army".
One person, that's been able to turn the tide of the war and becoming the hero of Karnack town, probably the hero of the Tryvania empire.
A crimson haired young lady in her coveralls and work boots, have been able to annihilates the mighty "Grand Army" with her ingenuity and great inventions, thus bringing victory to the Karnack town and Tryvania empire.
But in a twist of fate, she discovered that she's actually a lost noble daughter of the famous Grand Duke Vasilevsky.
What kind of fate does awaits her in the future as she's regained her lost memories in her new home.