Since ancient Japan, people who practice enlightenment in the mountains have accidentally become aliens-ghosts. They have extraordinary power to incarnate ghosts and protect human beings from demonized ghosts. Because of this, they are worshipped as ghosts. Gradually, ghosts systematize their abilities and divide them into heritable schools, ghosts and schools left by ghosts. A school named "Warrior" was set up to continue to fight against "demonized raccoons" with various sound weapons caused by "voiceless" ... But in modern times, ghost warriors who fight by sound still live an unknown life of hunting demonized raccoons. ...
Anda's dream for tomorrow is a junior three student, lost in exams and ideals. On the way back to his hometown with his mother to attend the ceremony, he met a mysterious person. He saved a child in an incredible way, which attracted the attention of Anda's dream of tomorrow. As an ordinary child, Anda gradually stepped into a world he didn't know at all ... This is the world of ghost soldiers ... What kind of people will he meet here?