In 1986, Otoya was playing his violin when Yuri comes looking for him, asking him to take on a girl named Mami Kurasawa as his violin student to have her overcome her slump and pass the audition. Though he refused at first, he accepts under the condition that Yuri goes on with him on a date. In 2008, after being eaten by Castle Doran, Wataru is taken by Jiro into a chamber to treat his injuries from the Lion Fangire, Rook.