Bruce Osborn has been taking oyako (parent and child) photos for 29 years and has organised his day of photographing, oyako-no-hi (parent and child day), for 9 years. The general run of his oyako shots are often adult children with a parent or parents, the oyako-no-hi is more of a festival of family shots. This year (in July) he photographed 109 families on that one day.
It's a high energy shoot (as well as being physically up for it, he recognised that he should have trained his voice as well) and it's a definite celebration of family. Each shot is taken in a necessarily quick turnaround, but his method of getting the pose (often involving the family jumping into a close group pose or some similar action) actually gets some seemingly intimate shots. Sometimes the jump seems to reveal a balance of energies and focus – like the little black-hole of energy the child seems to be below.
Others are simply good fun.