Overview

• The agency presented the set to Emperor Naruhito and Empress Masako on September 18 and to former Emperor Akihito and Empress Michiko on September 19, delivered by Director-General Nishimura Yasuhiko.
• The chronicle documents Empress Kojun’s daily activities alongside Emperor Showa across prewar, wartime, and postwar eras in a verified, chronological format.
• The presentation copies are B5-format in 13 volumes with a contents and notes volume, covering court ceremonies, regional visits, foreign exchanges, and meetings with other imperial family members.
• Editors drew on official diaries and public records, collected roughly 1,500 source materials, and conducted interviews with about 30 former aides to ensure accuracy.
• The Empress Kojun record is the ninth modern imperial chronicle compiled by the agency, following the 2014 Showa Emperor chronicle.