Terai Ichiyu, white hannya noh mask, 2017. Wood (cypress), natural paints (shell, mercury, carbon [sumi], ocher, gold), cotton cord. 10 5⁄8 × 6 11⁄16 × 4 1⁄8 in. International Folk Art Foundation, Museum of International Folk Art (FA.2018.33.1). Photograph by Addison Doty. A hannya is a female demon. This mask represents a woman transformed into a demon by jealousy and rage. During a noh performance, the mask must portray various emotions, such as ferocious rage, fear, and extreme sadness.