高城 秋五

A private detective based in Ueno. Used to work with Reiji and Uozumi and still helps out his friends when needed. Married to Kazuna, a former client with whom he shares a lot of history. Since she's currently pregnant, Shugo focuses on less dangerous tasks like investigating cheating spouses and searching for people in order to worry her less./

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He is the younger brother of Natsume.