Kepler means law of space. The metaphor is the earth that turns on an oval axis around the sun. With the design of the oval, I figured that infinite possibilities. It comes from the desire to send a smile to all the people in the world - an ability that a person acquires. When we have a thing in our hand, it becomes the form of half ovals. I am familiar with a hand by making an oval cup. I regulate the quantity to drink by changing the position from swallow up to drink. It is a story of how to drink together. The sake cup comes with a cotton bag. It carries it and conveys a feel of the Japanese culture.