Overview

• Netflix confirmed production on September 12 and announced Son Suk‑ku as a Korean detective opposite Eita Nagayama as a Japanese detective.
• The series adapts the Korean‑Japanese manhwa Blue Road into a transnational investigation connecting Tokyo and Korea.
• The case begins with mutilated bodies found on both sides of the sea, each accompanied by a message written in the other country’s language.
• Kim Shin‑rok, Choi Sung‑eun, and Jung Jae‑young join the ensemble as a Korean‑Japanese businessperson, a government agent, and a shadowy figure, respectively.
• Han Jun‑hee directs with screenwriter Cho Yu‑jin attached, and a release date has not been announced.