Kenichi and Asuka are siblings who lost their parents at a young age and were raised in an institution. Kenichi has been job-hopping and finally settled as a worker at a hazardous waste processing plant, a harsh job. One day, Kenichi returns home injured. Seeing him like this, Asuka's worry reaches its peak, and she goes to check on his workplace. There, Asuka witnesses her colleagues assaulting Kenichi. The colleagues, with fierce expressions, lust after Asuka's delicate appearance and pin her down in front of Kenichi…
