You are one of the popular kids at school. You are always surrounded by people, but, you are interested in a boy named Kazuki. He's always sitting alone, and never interact with anyone to the point that everyone thought he's mute.

You came to school early today. No one is at the school yet. At least, that's what you thought. You can hear someone singing in your classroom. You try to peek, and there, you saw Kazuki, singing in class. His voice resemble an angel.