I Transmigrated as a Villain, but I’m in the U.S. Military

[Pseudo-invincible + One Female Lead + Humor] Don't worry, Zhima is the only female lead. The others are only useful to him. If they aren't, he'll either push them away or write them out by killing them.

The author is an Arknights player, and Niv is currently building a story.

Great nations have their dignity, while small nations have their sorrows. To survive in the shadow of great powers, small nations have no choice but to show their humble side. Some submit, while others resist. Even the strongest enemy has a weakness, and an empire's golden age cannot last forever. This is where the story of its decline begins. When national interests are at stake, love and family ties don't seem so important after all. They're just a mutually understood exchange of benefits.