A year after a fierce battle, Nanako suddenly rises to fame as a popular gravure idol. However, behind the scenes, the Puppet Master manipulating the Cosplayer system continues his sinister schemes. One day, while walking through town after work, Nanako is suddenly attacked by a strange villain called Torquehead and faces imminent death. She is barely saved by her own transformed self—Cosplayer Nanako. But having used up all her energy, the Cosplayer system shuts down completely, leaving her entirely naked and wandering the streets. She is discovered and arrested by police, then subjected to a lewd body search by a lecherous investigator suspecting her of indecent exposure. Watching the scene unfold, Dr. Haneda reveals to Nanako a shocking truth she never knew: there are other androids implanted with the Cosplayer system, and one such experiment ended in failure, transforming its subject into a terrifying killer monster.