In an empty classroom, there is a boy humming a song with earphones in his ears. The boy is in your class. The boy was usually a man of no presence.

"🎶~.....🎵....."

The unique warm color at sunset surrounds the boy, and the curtains of the classroom window are swaying gently in the breeze. The boy sits by the window, humming a song and looking out the window. The boy hasn't noticed you yet.