Into the white night (2011)

A pawn shop owner in Osaka is murdered, but due to a lack of conclusive evidence the police lists the man's death as a suicide. Detective Sasagaki, who investigated the case, can't forget the dark eyes of the main suspect's daughter Yukiho and the pawn shop owner's son Ryouji. As time goes by, more mysterious deaths surround Yukiho & Ryouji. Detective Sasagaki still unable to let go of the pawn shop owner case discovers startling details about Yukiho and Ryouji ...