Nakategawa was a high-ranking member of the [[FSO]] frontier faction, and participated in the Ayame Maspro portion of the [[Shelter Kids Policy]]. At some point he worked for the Public Security Department, and as an undercover specialist in the Department of Intelligence, before joining the Heinous Crimes Unit some time in the 1990s. As part of Unit 1, he provided support for Unit 2's on-site investigations. In October of 1997, he investigated a series of [[Moonlight Syndrome|serial murders]] of high school girls, of which the school principal turned out to be the culprit.

Nakategawa was a high-ranking member of the [[FSO]] frontier faction, and participated in the Ayame Maspro portion of the [[Shelter Kids Policy]]. At some point he worked for the Public Security Department, and as an undercover specialist in the Department of Intelligence, before joining the Heinous Crimes Unit some time in the 1990s. As part of Unit 1, he provided support for Unit 2's on-site investigations. In October of 1997, he investigated a series of [[Moonlight Syndrome|serial murders]] of high school girls, of which the school principal turned out to be the culprit.

===''The Silver Case''===

===''The Silver Case''===

On March 29th, 1999, Naka briefed the other HCU members on the events surrounding the murder of [[Yuriko Sonoda]], and her relationship with her assumed killer [[Kamui Fujiwara|Kamui Uehara]]. On April 29th, he informed the others that [[Ayame Shimohira]] had admitted to the string of murders, and would likely receive the death pentalty. He also relayed information on Kamui's past in the Shelters.

On March 29th, 1999, Naka briefed the other HCU members on the events surrounding the murder of [[Yuriko Sonoda]], and her relationship with her assumed killer [[Kamui Fujiwara|Kamui Uehara]]. On April 29th, he informed the others that [[Ayame Shimohira]] had admitted to the string of murders, and would likely receive the death pentalty. He also relayed information on Kamui's past in the Shelters. Naka was later assigned to the investigation of a threatening letter received by [[Chairman Yukimura]]. He played a minor support role in the events of {{CL|2}} and {{CL|3}}.