The romance manga is about "love that starts with a voice." The story follows the relationship that is "a little different" between high school students Yuiko and Matsubara, a boy who is also "a little different." Matsubara is a kind boy with a wonderful voice. After hearing him over the phone, Yuiko finally meets Matsubara at school and discovers that he always wears a paper bag over his head. Yuiko wonders about the mysterious boy, and their relationship begins.

• Koe Koi