Gokumontou SP (19 Nov. 2016, NHK) is a two hour long special based on a Kindaichi Kosuke mystery by Yokomizu Seishi. Hasegawa Hiroki plays the famous detective Kindaichi. The setting is 1946, on a fictional island called Gokumon-tou, located in the Seto Inland Sea. Kindaichi intended to convalesce in Gokumontou, at the invitation of his war buddy Kitou Chimata, the successor son of the island's powerful clan called the Kitou Family. However, Kindaichi arrived alone, bringing bad news of Chimata's demise.