One day, I saw the light and shadow on a table. The border was not clear. I could realize the border only by words. The same thing can be said about other things, for example, white and black, East and West, stoicism and sensuality, beast and beauty and so on. Apparently those look different, but actually those border is not clear. I was very interested in the truth. So I have decided to use the vagueness for objects. This charcoal gray is quoted from Japanese roof tiles. I'm sure that a rows of houses with Japanese tiles is one of our beauty.