For a first date, Naoki Yasuda thought it went pretty well. OK, the woman the 46-year-old was looking at was plainer than the flattering photo she posted on an internet dating site, but she seemed kind, attentive and eager to start a serious relationship. The pair chatted for three hours in her modest Tokyo apartment last September, and by the end, 34-year-old Kanae Kijima agreed to move in with him that week at his house in nearby Chiba Prefecture.