I was transmigrated into another world as a princess of a fallen kingdom, bullied by everyone. By chance, I obtained magical items that I could bring back to reality.
I thought my country would take me for a lunatic, but when I turned them in, the highest levels of government were thrown into an uproar.
"Comrade, please give us a detailed account of the other world's geography and military deployment."
From then on, I became my country's strategic advisor in another world, leading a team in reverse-engineering magic.
No romance!