Some in the cloister government, such as Goshirakawa, started to feel displeased about the expanding power of Kiyomori, and after the death of Kenshunmon-in, Kiyomori expanded his power, and conflict with Kiyomori gradually escalated.
ところが、この清盛の勢力の伸張に対して、後白河をはじめとする院政勢力は不快を感じるようになり、建春門院の死を契機に次第に清盛と対立を深めていく。