The Extra in the Romance Fantasy Starts a War

I reincarnated as an extra prince in a romance fantasy. Since I was born a prince, I planned to just take it easy and live a laid-back life, but… The Empire’s Crown Prince “The annual tribute from your small nation isn’t even enough to cover the Lady’s tea party expenses. Triple the tribute immediately.” The Grand Duke of the North “She said she wants to see the warm southern sea. I will be using your kingdom’s annex as a vacation home, so empty it out.” The Naval Admiral “For the sake of the lovely Lady, the can*l tolls will be increased tenfold starting today. Do you have any complaints?” I can’t stand the sight of these bastards anymore. This is war.