High school student Ayumi is trained by his grandmother to act as a "tsunagu," an intermediary for people who want to reach the dead.

A grandmother has the ability to connect the living with the dead. However, this activity hinges on the willingness and acceptance of the dead subjects. She would like to pass on her ability to her grandson. As such, he is in training. Various folks avail themselves of this ability and chance, but there are also those who are skeptical.—aghaemi