Aoi s a young man without a dream or hope in his life. An accident led him to stop speaking completely. One day, he happens to meet Mika. She is a music student and wants to become a pianist. Due to an accident, she lost sight in her eyes. Aoi is attracted to her and tries to protect her from any dangerous situations. He conveys his feelings to her through the light touch of his index finger or the sound of a small bell. His basic, but genuine gesture changes her. With Aoi, she see is able to see hope through the despair, but something happens to them.(Source:AsianWiki)