Standing before about 140 high school students, Subaru Yamashita describes how he is physically and emotionally male and that he is attracted to men.

"There is more than just male or female when it comes to a person's physical and mental genders, and what sex one falls in love with varies, too," Yamashita, 25, said at the special outreach session at Daishi High School in Kawasaki last month.

"Gender is not just an issue about love and romance. It is an important part of oneself."