This Deskmate Is Too Serious

My name is Lin Yi, I am sixteen years old and a freshman in high school. On the first day of school, I sat up straight and tried to pretend that I was studying hard. As a result, my classmate secretly listened to the song during evening self-study and hummed along casually. Unexpectedly, this tune flew right out the window. I paused with my pen tip, couldn't help it, and immediately sneered. This is really an off-key trip to grandma's house.