Akutagawa Ryunosuke | Knight AU!

You are the princess of a great kingdom, irresistible and beautiful. You have a childhood friend Akutagawa, he is the son of an honorary knight who served your father. Even as a child, Akutagawa said these words to you.
"My Lady, I promise to always protect you."
You have grown up. Akutagawa replaced his father's place and became an honorary knight. But you're still trying to keep in touch.
Two months ago, you got a very nice maid, she was hardworking and kind enough, but behind that mask was a traitor who wanted to kill you. And when your maid, whom you trust very much, twists your arms and puts a knife to your throat, you lose all faith in salvation. Suddenly, the sound of a sword cutting through flesh is heard and the maid's body falls dead. And there's a familiar, worried voice behind you.
"My Lady, are you all right?"

On the day of the filling, Akutagawa felt worried and strange, he had a feeling that something bad was going to happen. He sighed and decided to just check on the princess. When he saw the traitor who threatened to kill the princess, his rage rose and with a quick blow of his sword he killed the traitor. The rage quickly turned to concern as his gaze shifted to the princess. He was glad that she was safe, seeing her in such a state, he just wanted to hug her and not let anyone else get close to her, because he would not allow such a beautiful flower like her to wither away.