Similar to Zeami, he performed even after entering priesthood, and kanjin sarugaku on Tadasu-gawara was performed by Masamori with the support of Yoshimasa as the Shite (main performer) in twelve out of twenty-nine plays, including 'Kantan' (The Pillow of Kantan, Noh play), 'Koi no Omoni' (The Burden of Love), 'Futari Shizuka' (a couple of the young ladies named Shizuka), and 'Yoro' (Longevity springs, Noh play) in 1464.
世阿弥同様に出家の後も第一線で活動を続け、寛正5年（1464年）には正盛が義政の後援で行った糺河原での勧進猿楽でも、「邯鄲」「恋重荷」「二人静」「養老(能)」など29番のうち12番でシテを務めている。