Origins and Beginnings of the Insei System

Name: Origins and Beginnings of the Insei System
Start: 1080
End: 1086

Type Event Region Japan Time 1080–1086

In the late reign of Emperor Shirakawa, during the 1080s, preparations began for retired-emperor politics;…

Timeline

c. 1080–1085Heian-kyō · KinkiIn the later years of his reign, Emperor Shirakawa gradually expanded direct armed forces such as the Hokumen warriors and the Benkei-fu, and reorganized temple and shrine estates, making institutional and personnel preparations to continue ruling as a retired emperor after abdication.
1086Shirakawa-in · KinkiIn 1086, Emperor Shirakawa ceded the throne to Prince Saitō (Emperor Saitō), and himself issued orders from Shirakawa-in as a retired emperor, inaugurating what is known as "rule beneath the heavens" insei; from then on, the court and sekke politics were placed beneath the In-no-chō.
c. 1086–1090Heian-kyō · KinkiInsei institutions such as the In-no-chō officials, Hokumen warriors, and the In Hōkan-dai gradually took shape; the retired emperor governed court politics, personnel, and military affairs through In documents, establishing the model for later insei under Toba-in and Go-Shirakawa-in.

日本纪略 https://ja.wikipedia.org/wiki/日本紀略
Cambridge History of Japan, Volume 2: Heian Japan — Donald H. Shively and William H. McCullough (eds.) (1999)