Because of his extreme wickedness, the Emperor ordered the formation of a punitive force composed of the Four Loyal Retainers of Yorimitsu, led by MINAMOTO no Yorimitsu of the Settsu-Genji and WATANABE no Tsuna of the Saga-Genji.
あまりにも悪行を働くので帝の命により摂津源氏の源頼光と嵯峨源氏の渡辺綱を筆頭とする頼光四天王により討伐隊が結成された。