The Grand Princess, but with a Human Emperor System

Jiang Xian transmigrated.

The good news: she was now the eldest princess of an empire, powerful and highly favored.

The bad news: her country was on the brink of annihilation. In short, either way, she was going to die.

Jiang Xian: "..."

The System that brought her here: Want to live? Then lead the people of Da Qi in their struggle!

Step one to staying alive: Put on the imperial robes and take the throne!

Jiang Xian, stunned: Huh? Me?!

In the first year of the Kaiyuan era, the barrier between the human and demon realms vanished. The demon army invaded the human realm in force, bringing humanity to the brink of extinction. Jiang Xian, eldest princess of the Da Qi royal family, overpowered her many imperial brothers and ascended the throne. She led humanity's soldiers in resisting the demon army and secured the future of Da Qi.

Jiang Xian, forcing a smile: Surely the country won't be destroyed now, right?

Step two to staying alive: Eliminate internal troubles and strengthen infrastructure!

Jiang Xian: Is this ever going to end?

System: Don't rush, we're not done yet!

Step three to staying alive: Make your name known across the three realms and become a legend for the ages!

Jiang Xian: Cough, cough, cough! Isn't that setting the bar a little high?

System: How can you create a legend if your goal isn't big?

Jiang Xian: ...Fair enough.

Theme: Clear skies and calm seas, peace throughout the land.