Oku married actressHinako Saeki in 2002. In 2013, Oku was arrested by Kanagawa Prefecture police after he threatened to kill Hinako on multiple occasions.[4] Saeki eventually filed for divorce later that year.[5] But prosecutors decided not to indict Oku.[6]
Death
On the morning of 17 October 2014, Oku was killed following a car accident on Miyako Island.[7] He was driving on a prefectural road at about 4:25 a.m. when his car veered into the opposite lane and struck a telephone pole.[8] According to police, he was transported to a hospital, where he was soon pronounced dead from a broken pelvis and other injuries.[8] There were no other passengers in the car and following his death, police began investigating the cause of the accident.[6]