The exhausted armies dissolved and by 1477 open warfare ended. When Yoshimasa declared that Yoshihisa would be the next "shōgun" after he stepped down from that responsibility, he anticipated that his son would out-live him. When "shōgun" Yoshihisa died prematurely, Yoshimasa reassumed the power and responsibility he had wanted to lay aside. "Shōgun" Yoshimasa adopted the son of his brother, Yoshimi. In 1489, "shōgun" Yoshitane was installed; and Yoshimasa retired again. Before Yoshimasa died in 1490, he again adopted a nephew as heir, this time the son of his brother, Masatomo. Although Yoshitane did outlive Yoshimasa, his shogunate would prove short-lived. Yoshitane died in 1493. Also, before he married Hino Tomiko, sister of Hino Katsumitsu, he had a concubine, Lady Oima, who was 8 months pregnant when Tomiko pushed her from the stairs which resulted in a miscarriage. Shōgun Yoshimasa was succeeded by "shōgun" Yoshihisa (Yoshimasa's natural son), then by "shōgun" Yoshitane (Yoshimasa's first adopted son), and then by "shōgun" Yoshizumi (Yoshimasa's second adopted son). Yoshizumi's progeny would directly succeed him as head of the shogunate. In the future, power struggles from outside the clan would also lead to a brief period in which the great-grandson of Yoshitane would be installed as a puppet leader of the Ashikaga shogunate. During Yoshimasa's reign Japan saw the growth of the Higashiyama culture ("Higashiyama bunka"), famous for tea ceremony ("Sadō"), flower arrangement ("Kadō" or "Ikebana"), "Noh" drama, and Indian ink painting. Higashiyama culture was greatly influenced by Zen Buddhism and saw the rise of Japanese aesthetics like "Wabi-sabi" and the harmonization of imperial court ("Kuge") and samurai ("Bushi") culture. In the history of this "Higashiyama bunka" period, a few specific dates are noteworthy:  The years in which Yoshimasa was "shōgun" are more specifically identified by more than one era name or "nengō".