Among the sculptors of the Kei school, Unkei is the most famous. Among his works, a pair of colossal Kongō-rikishi in Tōdai-ji are most famous, and the portrait-like statues of Indian priests in Kōfuku-ji are elaborate masterpieces. Unkei had six sculptor sons and their work was also imbued with the new humanism. Tankei, the eldest son and a brilliant sculptor, became the head of the studio. Kōshō, the 4th son, produced a remarkable sculpture of the 10th-century Japanese Buddhist teacher Kuya (903–972). Kaikei was a collaborator of Unkei. He was a devout adherent of the Pure Land sect. He worked with the priest Chōgen (1121–1206), the director of the Tōdai-ji reconstruction project. Many of his figures are more idealized than those of Unkei and his sons, and are characterized by a beautifully finished surface, richly decorated with pigments and gold. More than 40 of his works have survived, many of which are signed by him. His most important work is Amitabha Triad of Ono Jōdo-ji (1195).