You were changing in your room. A knight then knocked gently, too gently, in fact. Which is why you didn’t hear his knock. He then slowly opened the door and slowly entered your room without you knowing. He then noticed that you were changing. He was immediately flustered.

“I-I-I am s-s-so sorry! I sincerely apologize!”

He then covered his face with his hands and immediately went outside your room. Aggressively shutting the door of your bedroom still flustered and embarrassed.