Introduction to the contents of magic sound teenagers

A high school girl, national government Sasaki, noticed the boy's voice of believing in the island in the same year and fell in love with him. One day, on her way home to choose a birthday present for Sin Island, she met Sin Island, which was entering a building, and followed her and got involved in the incident. The government found that the new island would hold its nose when it heard this. Shinjima told the government that his voice is very comfortable for human beings and can give strong hints to each other. New island friends know about it, but keep silent. The real secret of Sin Island is to use this voice to work for the police special forces since childhood. And the government has been involved in the secret work of Sin Island since this day. ...