Miku Arima, a busty honor student, is gang-raped while being continuously imprisoned by her mentally ill classmates. (GVH-657)

Miku is a quiet and diligent top student attending a prestigious high school in Tokyo. However, Miku has a problem: she is constantly harassed by Kashiwagi, the son of the school's board chairman, who is a delinquent student. Kashiwagi has antisocial personality traits, and his thoughts are unpredictable, causing Miku to live in fear every day, only able to avoid him. However, in her chaotic home, she suffers unreasonable abuse, becoming a tragic victim of sexual exploitation.