As a young girl, Sakura Mamiya vanished without explanation in the forest behind her grandmother’s house. She came back unharmed, but from that moment on, she gained the ability to see spirits. Now in her teenage years, she longs for a life free from these spectral encounters. At her school, the seat beside Sakura has remained unoccupied since the beginning of the academic year. However, one day, her perpetually missing classmate finally appears, revealing himself to be much more than he appears!