A first for Attackers! A long-term shoot that spans four months. A brutal record of Koharu Asai's journey to awakening as a masochist! Hard training that continues to drive the wedge of SM into her private life! SM director Usuba Shisui and bondage artist Doyama Tesshin. The two were convinced of Kokoro's potential and promised to awaken her masochism. "Are you sure?!" "Yes! I'll be your slave, please train me!"