This first volume is mostly an introduction to the main character and the set-up for the plot. Kosei was a piano prodigy and abruptly stopped playing the piano in 6th grade following the death of his mother. Kosei is now 14 years old and he seems to have some form of depression. His mother forced him to play the piano competitively and he associates playing it with negative memories of her. This has become a barrier to him picking up the hobby again. He has a strong friendship with Tsubaki and Wataki and they bring some light into his life despite his depression. When he is introduced to Kaori, it's interesting to see the contrast in how she plays an instrument (the violin) to how Kosei played the piano. Kosei had it drilled into him that music could only be done competitively. When he meets Kaori those barriers start to break down. She does not place importance on competition and cares more about the experience of playing the violin in front of an audience. She is also happier for it and Kosei can see it. When she finds out he used to play the piano, she encourages him to pick up the piano again in quite a humorous way. They do have a heart-to-heart moment at the end of the first volume where she invites him to accompany her to play live in front of an audience. This is a heartwarming story about friendship, loss, and healing. If you like stories focused on those things, I would recommend picking this first volume up. This isn't usually the type of manga I gravitate towards, but I'm willing to continue reading to see where it goes since it is interesting.