A Japanese media, NikkanSports disclosed the names who had affairs with Ken, as told by Ken's wife, Yumiko. They are:
Asano Atsuko
Atusko Suaurai
Miho Jun
Koyuki
His wife said that she found condoms in Ken's car. And she found many pictures of Ken with other actresses. She further said that Ken has told her that he want to be with Atusko Suaurai together.
Regarding Koyuki, her agent made a statement: "It is not the reality. It depressed us a lot. Their relationship is just the kind to say 'HI' when filming only."
