Volume 1: "Late at night, alone in bed, your voice was the only thing that saved me. I want to talk to you again. I have something to say. Arisu Yamabuki, a high school sophomore, is looking for a girl named "Apollo," a radio broadcaster whose face and real name she doesn't know. One day, however, Arisu finds a clue about Apollo in the broadcasting club of the high school she is going to. There were four beautiful girls there who dream of "working in the voice business"...four! Who is Apollo? Wh...
