Detectives continue to interrogate Koi, who speaks of further experiments... that is, experiments outside the hospital. Ryuuji continues to conduct experiments even on his days off. Ryuji follows Koi around town with a vibrator still inside her private parts. In the midst of this, a change of heart is beginning to occur in Koi. Investigation then extends to the head nurse, Reimi, who tells of her relationship with Ryuji... Another victim of the insane experiment...