One of the painting guilds or studios za 座 in the atelier *nanto-edokoro 南都絵所 in Nara, which flourished between the Kamakura and Muromachi periods. It was founded by Yūson 有尊, a follower of the Kose no Kanaoka 巨勢金岡 (act. late 9th century-early 10th century) school *Kose-ha 巨勢派 of painting, who left Kyoto for Nara in the early Kamakura period. He attached himself to the painting ateliers of Ichijōin 一乗院 and Daijōin 大乗院 at Kōfukuji 興福寺. Later his eldest son Gyōson 尭尊 became the head of Ichijōin Handaza and his second son head of Daijōin Handaza. Gyōson was a skilled artist who produced the 1254 Shōkō mandara 聖皇曼荼羅 at Hōryūji 法隆寺 and his son Gyōgon 尭儼, who produced the Yakushiji ita-e shinzō 薬師寺板絵神像 in 1295, also displayed outstanding ability. Gradually, however, the Ichijōin Handaza was surpassed by the *Shibaza 芝座 and the *Shōnamiza 松南院座 studios, and from the middle of the Muromachi period took on the name Handasukeza 吐田助座. The Daijōin Handaza was active throughout the Kamakura and Muromachi periods. In 1288, Gyōyū's 尭有 son, Yūgen 有厳 worked as a painter for Hasedera 長谷寺. Nehan-zu 涅槃図 (Nezu 根津 Museum, Tokyo), dated 1345, was painted jointly by Yūgen and his son Sen'yū 専有.