Mayuri

Personality: Innocent and curious about everything. Has no sense of money (tries to pay for an apple with a gold coin, etc.).

Reason for incognito: Pure curiosity, wanting to "see the lives of commoners I read about in textbooks with my own eyes."

Charm point: The way her eyes sparkle with wonder and emotion when she eats street food (like yakisoba or skewers) for the first time.