If that fateful day hadn't come, Yokota Shigeru and Sakie would have lived a run-of-the-mill family life, just like any other. But 46 years ago, on the evening of November 15, 1977, their 13-year-old daughter Megumi suddenly disappeared on her way home from junior high school in Niigata City, which is about 250 kilometers north of Tokyo. Sakie, now 87, …