国風貴族文化の開花 the flowering of an indigenous aristcratic culture
源氏物語 the Tale of Genji
律令制度の崩壊 the disintegration of the ritsuryo system
薬子の変 Kusuko Incident
藤原北家 the Hokke branch of the Fujiwara family
朝廷での権力確立 gain political ascendancy at the imperial court
開祖 founder
真言宗 the Shingon sect of Buddhism