In the year 2000 AD, human beings have been fighting against intelligent machines since I don't know when.
Violence, cold-bloodedness, and absolute strength are the biggest impressions humans have on intelligent machines. They treat humans as inferior creatures as their underlying code, and hunt humans all the time.
The remaining humans joined groups to stay warm and formed their own safe cities in every corner of the world to resist the invasion of intelligent machines. But no one knows when it will end.
The mechanical girl Chikoa wakes up from a corner in the suburbs, and a voice calling herself "teacher" unexpectedly appears in her mind and directs her every move. What is the truth of everything, and what is her identity, may one day be revealed...
Purpose: To praise human beings for their courage and firm will, and to remain unyielding in the face of difficulties. The growth journey of a confused girl