Shichi-Go-San (753) is a Shinto event just after the year's harvest. They thank Shinto deities for the year's yields and for the sound growth of children. It dates back 400 years ago to the Edo era. To pray for the children to grow and live long, Chitose-ame candy (pic) is given. Its length represents longevity. Girls who are 7 years old and 3 years old, and boys 5 years old join this celebration, hence 7-5-3, the name of the event.