This is a fundamental textbook by Professor Ashibe, an authority on the Constitution. It's also an ideal introductory book for those who have become interested in the Constitution after the House of Councillors election. The eighth edition has been published, but due to the nature of the subject, there aren't significant differences, so I believe it can be used as a textbook. "Constitution" Nobuyoshi Ashibe, Author / Kazuyuki Takahashi, Revised Price: ¥3200