The opposition Democratic Party boycotted Diet deliberation Friday on the Trans-Pacific Partnership after it obtained a manuscript of memoirs authored by former farm minister Koya Nishikawa. The book, which was to be published next month, reveals details of what went on in negotiations behind closed doors.

Prime Minister Shinzo Abe's government has rejected repeated calls from the DP and other opposition parties to disclose the horse trading that went on in getting agreement on the TPP.

Apparently shaken by the stir his book has caused, Nishikawa later told reporters he will not send it into print.