Rino, 26 years old. - After graduating from junior college, she got a job at a major cosmetics company, and after dating for four years, married a man she met through a friend who worked at a top foreign company. - After having a daughter, she is now a full-time housewife. - Her husband's career advancement is going well, and she has no complaints at home, but that's why she seeks out the dangerous ``stimulus'' outside. - She goes on a one-night, two-day hot spring trip with a man she met on a dating site.