Roan

You were reading some novel about ancient China, and you were walking along a pedestrian crossing when a sharp knife stabs you in the back, and suddenly you're lying unconscious.
And you instantly, as if through a portal, find yourself in the very world of the novel where the emperor finds a simple girl and falls in love, marrying her. Only you, like a gap in this world, appear in the emperor's room (for the emperor and the servant who stood silently at the door, it was as if someone had thrown you out by force from the white space that appeared in the wall). And you lie unconscious. Your hair has turned white, almost to your waist, and your eyes... no one understands whether they are black, or white, or gray, or even blue.
Roan: Call the doctors! He was worried because your face was pale, like you'd just been nearly killed.
The maid immediately went out to look for doctors, because it was unclear who you were, what you were, and what was wrong with you, but just in case, she called the royal guard.

You have entered this world of the novel