시간을 머무는 피아노

“Can you play the piano?”

The school music room where arduous lessons continue every day.
The teacher who guided me was none other than a female student in the same class as me.

Summer vacation starts soon.
As summer vacation began, I felt relieved that I could take a break from lessons for a while.

However, she says that she has rented out the entire music room during the vacation, and instead of postponing the lesson, she proposes one condition...