This is the story of Toyokawa Shoko and Wakaba Mutsu.
It's not a one-way street of who saves whom, but two originally lonely instruments, through countless frictions and resonances, finally found the tones that belong to each other.
They almost lost each other, but they also learned that as long as the keys are still there, the sound of the strings will not be cut off.
Purpose: To make up for regrets