Declining period: After the Go Sannen no Eki (Later Three Years' Campaign) in the period of MINAMOTO no Yoshiie ~ Rebellion by MINAMOTO no Yoshichika, an elder brother of MINAMOTO no Yoshitada in the period of MINAMOTO no Yoshitada.
斜陽期-源義家時代の後三年の役後～源義忠時代の兄源義親の反乱