I didn't succeed but I know the reason. I used a lot of materials which I never used before.
( videos , panel, tv, micro with effect, led, mask etc...)
Recently I went to listen the workshop fo William Kentridge( http://en.wikipedia.org/wiki/William_Kentridge)for Kyoto Prize. He describes about his experience of life as "process of creative failures and deviations".
Some parts of this piece, I want to develop. After I came back to Japan, I already spent 2 months. I have to find my new place for living.