A piece of paper was pasted on the inner surface of the shell, on which they drew a picture on the theme of Genji (The Tale of Genji) or the like, then finished it up with gold leaves and others to give it a brilliant coloring; the same picture was painted on each shell of the pair.
殻の内面には紙を貼り、源氏などの絵をかき、金箔などで極彩色に仕上げ、左右一対の殻には同じ絵を描いた。