A circle is born in the space, and people step into the circle. 

Butterflies fly in the circles drawn in the space. When you touch the butterflies, they die and fall away. If you enter the circle or the flutter of butterflies, you will find a completely different world inside.

A calligraphic work in Zen, enso (a circle drawn with a single stroke) has since ancient times been written with canes or sticks in midair. It is said to represent enlightenment, truth, the entirety of the universe, and equality. The circle also reflects the hearts and minds of those who view it, with its interpretation left to the individual.