Abstract
This paper analyzes the legislative process of the bill on the protection of specially designated secrets which passed the Japanese Diet in December 2013, for the purpose of clarifying how the divided Diet changes the legislative process of confrontational bills. The author expects, applying the game theory, that the government tends to give up submitting confrontational bills to the Diet in the divided Diet. Further, I focus on the process until the bill on the protection of specially designated secrets is submitted to the Diet, and show that it was not submitted to the Diet, though the bill was prepared for beforehand in the divided Diet.
