TOKYO - The death toll from unprecedented rains in Japan rose to at least 62 on Sunday as widespread flooding forced several million from their homes, with more rain set to hit some areas for at least another day.Torrential rains that saw some parts of western Japan pounded with three times the usual precipitation for a normal July set off landslides and sent rivers surging over their banks, trapping many people in their houses or on rooftops."We've never experienced this kind of rain before," an official at the Japanese Meteorological Agency told a news conference. "This is a situation of extreme danger."At least 62 people were dead and 44 missing, national broadcaster NHK said. Among the missing was a nine-year-old boy believed trapped in his house by a landslide that left at least three others dead, one of them a man in his 80s.