Volume 1 Introduction: Two Girls—Things Invisible to the Eye, Things Irreplaceable.
One day just before entering high school, Saki Kindaichi is on her way to a piano lesson when she bumps into a stranger of the same age. She scrapes her hand, but after
the other girl stares at her wordlessly, she politely gives her a bandage and picks up her sheet music.
Saki meets the girl again in her class at school and learns that her name is Kanon Oikawa and that she is hard of hearing. At school, Kanon d...
