A popular poem circulating in Kyoto at the time reads, "A celestial being whom I once thought of as a demon, has descended upon the shores of Sakai," signifying the marriage's unusual circumstances.
Initially, the elderly retainer Uragami Norimune wielded significant influence over the Akamatsu clan as Yoshimura's guardian.
Ultimately, although Yoshimura retained his position as clan head, Tōshōin began issuing documents in her own name, marking the emergence of her influence.
In 1502, after the death of Norimune, Tōshōin assumed the role of guardian for Yoshimura, her son-in-law, with the support of her brother Matsumoto and the Akamatsu retainers.
Subsequently, Yoshimura rebelled, aligning himself with Yoshizumi and Ashikaga Yoshitsuna, and clashed with the Western daimyo Ōuchi Yoshitaka at the Battle of Funao.
Following a decisive defeat at the Battle of Funaokayama, Tōshōin personally negotiated a peace settlement with Akamatsu Yoshimura.