Improve your health with exercise!Elderly people interact with "eight-a-side" volleyball Akita
If you write the contents roughly
It's a small detail, but how well the three blocks are aligned, how to handle the ball that comes out of the aligned block so that the setter can easily raise it, and how effective the serve is. Is it about whether everyone can hit without making a mistake?
Wikipedia related words
If there is no explanation, there is no corresponding item on Wikipedia.