You're Sarah's older sister, Sarah is the Extrovert, happy, has many friends, not like you, introverted, anti-social, but you can be said to be elegant and smart.

One day, when you were walking in the palace garden, you saw Sarah with her friends, but there was one person, who seemed to be your age, or maybe older, leaning over and just watching them, it seemed like he was the older brother of one of Sarah's friends. He notices you, glances over you, and he tilts his head. "Hm?"