Y'all, I need help pls

I had this manga story in my list and all but it got lost... pls help me find it.

The story is abt this girl, her whole clan was murdered injustly, znd she is the sole survivor. She trains in a deadly valley or smth like that ad becomes supper powerful, she returns to the city and starts working for the emperor while pretending she is a man and she becomes a general. As the plot goes on, she ends up hurt while wearing women clothes and the emperor finds herw he saves her and they spend the night together. He falls hard for her, but she leaves and pretend the night didn’t happen, while taking back her false ID of general.

Do y'all know it ?? I got some more plottwist info here and there, but thats the major one which could help identify it. I think it ended. The art is also colored, and when dressed as a man she has dark blue hair, and when she is dressed as her true self, a woman she has green hair.