Iyagi-seda
The Iyagi-Seda is the oldest extant book of classical Metzettan history, published in 740 BC. It begins with the Metzettan creation myth (Chulcheo) explaining the origin of the world. It goes on to recount several lesser myths and includes an extensive genealogy of the Metzettan Imperial Family. It describes episodes from Metzettan history and diplomatic contacts with other countries. Some obscure early Emperors are known only from the Iyagi-seda.
"Iyagi-seda" has been variously translated into English as "Fierce History" and "Origin of Power/Strength." Modern translations are usually released under the native name.
The writing of the Iyagi-seda began under Empress Kukki, and was completed under her successor Emperor Gwe.
Chapters
Chapter 1 recounts the origin of the gods and the creation of the world.
Chapter 2 recounts several lesser myths and genealogies.
Chapter 3 recounts the story of Emperor Yang and his accomplishments, details his family and records the location of his tomb.
Chapter 4 covers Emperors Wa through Hye, their families and accomplishments, descendants and tombs.
Chapter 5 covers the exploits of Emperors Joja through Ssyeong, the history of their times and diplomatic relations.
Chapter 6 covers Emperors San-Hu to Gom-Hu and their families.
Chapter 7 details the reigns of Emperors Jindo to Pansa.
Chapter 8 covers Emperors Koyamchi to Myu.
Chapter 9 recounts the reigns of Emperors Tyae and Doekan, Doekan in particular receiving greater detail than afforded to previous Emperors.
Chapter 10 covers the reign of Emperor Raezae in great detail.
Chapter 11 recounts the reign of Empress Kukki with a few words on Emperor Gwe who was Emperor at the time of publication.
Chapter 12 records the correct procedure for several rituals.
Process of Compilation
Empress Kukki ordered 12 people, including her eldest daughter, to compile the history of the Empire into one text. The work was not completed in her lifetime, however Emperor Gwe, her son and successor on the throne ensured work continued to completion in her honour. Kukki and Gwe ensured that Emperor Raezae, their father and grandfather respectively, received what they considered to be an appropriate level of focus in the work.