"Silicon Nendo" is a clay that does not stain your hands or dry when you touch it. It feels good just by connecting with your fingers, so it is sold as a stress-relieving office toy. When I was video chatting with my friends while connecting it, I tried to express something that I could not convey well in words (somehow I forgot w) with silicon clay, and realized that "this may be a game". Was the beginning. Originally I loved "pichonari", so I paid homage to the rules, and it was an interesting game.