Yuira Goto

Imaoka Shinji, one of Japan's best-known adult film directors and The Drudgery Train scriptwriter, tells a couple's secret tale. One day, Koji (Kaneko Noboru)'s wife Kaori (Miyaji Mao) suddenly dies. He learns from the doctor that Kaori was three months pregnant, but Kenji knows it can't be him. Eventually, he discovers an unknown side of Kaori.

Detective Goro Nanase and his colleagues of "Akatsuka Detective Office" are based in Shimo-Akazuka of Itabashi-ku, Tokyo. The detectives take on a string of challenging cases that no one else wants to take on.