Aoi began to think about the truth behind the murder of Umezaki Wakana, and the true intention of admitting that the serial murderer 16 years ago was her.

In the process of hunting down Fuha who escaped during the first search, Fuha's confession was captured on video and spread on the Internet.Wangye Police Station received a large number of media who came to confirm the authenticity of the unbreakable confession.Aoi arbitrarily announced to reporters that she would re-investigate the incident 16 years ago.

Regarding Aoi's “rage”, Kosaka and other members of the Search First Department expressed their opposition.Aoi proposed to Ichijo that she wanted to investigate the incident 16 years ago, and Ichijo agreed.

While Aoi was investigating the investigation data at that time, Kasaka used a monitor to monitor Aoi's every move.Aoi discovered that important testimony materials proving the suspicion of her father Yasuo, who was arrested for the incident 16 years ago, were missing.

Kizaki and Natsume asked Amakusa, who assisted Fuwa in his escape, about the situation, but Amakusa denied that he was an accomplice.

Aoi and Kasaka went to the bar where Wakana frequented.According to the bar owner, Fuha and Wakana often come to the bar together.Then, Fupo told Wakana that I killed my sister... Aoi and Kasaka knew it.

Even so, Aoi doesn't think this is a crime that cannot be broken or established.After listening to Aoi's reasoning, Kasaka told Aoi something unexpected -.