Dragonheart (BTS OT7 x reader)

The Gong-li Empire has been on the peak of its power for a little over a millenium, and there was a very simple reason for that - dragonkind. When the first emperor of the Li Dynasty struck a deal with a witch that would allow him to bind dragons to the crown and force them into obedience, it was the beginning of its reign of terror and the end of freedom for creatures as old as nature itself.
Now, a woman hoping to change everything enters the ranks of the elite dragon rider unit among the imperial army and meets seven men that not only change her life, but help her change the fate of the whole world.

This is a BTS OT7 x reader dragon-rider AU story with dragon!BTS and knightess!reader