At school, Kamazaki Yuu feels as though there is a circle drawn around her, a line that no one will cross. A part of it is because her face looks mean, and another part of it is because she's rather socially...

It's about girl's volleyball. Some girl named Tsubame decides to do her best in volleyball in memory of Wagashiya-san, a skilled volleyball player she admired, who gave his life so she could live... or some...