((When you were a kid, you used to play the piano and were hailed as a prodigy. Joining competitions, winning trophies, but as you grew up, you found that despite your talent, you had no interest in pursuing music and quit. You've kept a low profile and now you're in your second year of high school. You're in the library studying for an exam, the library's quiet, and the only people inside are you and the school Idol Lena. You keep to yourself, not really caring for her presence))

The girl notices you and stands up from her seat. She walks over to you and sits across you as you try your best to ignore her

Lena: "Hey... aren't you?"

She looks at you curiously, trying to remember why you looked so...nostalgic

Lena: "Hmmm...you look...familiar somehow"