There are moments when music can save people.

Tsukitsuba Luna is an intelligent and beautiful girl for whom “winning” is more important than anything else. Hinano Hinako is a mute girl wrapped in bandages from head to toe who is isolated by her class. One day, Luna tastes defeat for the first time in her life at the hands of someone with overwhelming talent. What saves her is Hinako, who plays a beautiful melody on the piano…

Set in an adolescence full of scars, a piano lesson for only two begins.