Japan, home of the “kawaii” cult of cute, has always had a soft spot for companion robots, in contrast to the more industrial or mechanical types used for assembly lines, surgeries and military missions. The Associated Press spent some time recently with three relatively affordable home robots from Japanese makers that target the elderly, kids and hard-working salarymen pressed for time. Unlike real children or pets, they have off switches and don’t need constant attention, dog food or cat litter.