In 1515, Ujichika IMAGAWA fought and won against the governor of Owari Province, Yoshitatsu SHIBA, in Totomi Province, which caused the power of Shiba clan to decline.
永正12年(1515年)に今川氏親は遠江国で尾張国守護の斯波義達と戦い勝利し、斯波氏の威は衰えた。