Tamiya meets with Okamoto and Tabata to devise a plan to destroy Mizuno using explosive gas. Mizuno visits her and declares his love, saying he would do anything for her. She proceeds with her performance plans despite the musicians' refusal to attend out of fear. The police are soon forced to release Fujichiyo as she cannot be charged. The police arrive and attempt to subdue Mizuno, but he escapes once again. Sano in a rage, but is now grateful for his powers and the chance to help his love Fujichiyo dance again. Sano experimented on him and caused his transformation. Kyoko convinces her newspaper to print an invitation to Mizuno, who arrives at the designated time and place. Mizuno instead releases the other prisoners, causing a clash with police. Mizuno attempts a rescue, but she refuses to leave and be seen as a criminal herself. However, she still refuses to cooperate and is kept in police custody. Before he escapes through an overhead window, he demands Fujichiyo's release. He is brought to the second bank he robbed, where he demonstrates his ability to turn himself into a gaseous form that allows him to evade gunfire, pass through vault bars, and asphyxiate another cop. Sometime later, Mizuno surrenders himself to the police and offers to show them how he committed the robberies. She is arrested and questioned, but refuses to say where the money came from. Their suspicions of Fujichiyo appear confirmed when she attempts to pay for a theater space with stolen money. Okamoto reports these findings and his suspicion of her possible sponsor to Tabata, who recommends continuing to investigate Fujichiyo's dealings.Ī suspect is arrested after making a call to Kyoko's newspaper announcing the date and time of the next robbery, but Okamoto and Kyoko feel that his story does not add up. Fujichiyo also approaches a respected chamber music tutor named Osaki and offers him 200,000 yen to perform. They follow her to a library, where the librarian Mizuno tells them that she has been studying ancient songs and engravings. Okamoto and Kyoko discover that Fujichiyo is planning to perform again, but is reticent about the details.
He also learns from his superior Tabata that the bank victims died from asphyxiation.
Kyoko informs Okamoto that Fujichiyo is from a wealthy and respected family, but has not performed in some time. Shortly thereafter, another bank is robbed, with the culprit mysteriously evading all security measures, surviving gunfire from a police officer, and killing the officer and an employee before vanishing. Okamoto's girlfriend, newspaper reporter Kyoko Kono, insists on helping him despite him not taking her seriously. While investigating a mysterious bank robber, Detective Okamoto encounters dancer Fujichiyo Kasuga and her servant, Jiya.