Even though Yorimori was a younger brother of Iemori born to the same mother, given the difference in age of 15 years between Yorimori and Kiyomori, it was impossible for Yorimori to push Kiyomori aside.
頼盛は家盛の同母弟といっても清盛とは15歳の年齢差があり、清盛を押しのけることは無理だった。