A dance piece in *bugaku 舞楽 and the abstractly painted paper of cloth mask *zōmen 蔵面 used for it. Classification: a quiet dance haramai 平舞 of the Right u-no-mai 右舞 from Korea komagaku 高麗楽. The four or six dancers are dressed in simplified layered costumes kasane shōzoku 襲装束 exposing an embroidered vest and with fringed lacquer hats; they hold short sticks and move in unison.
The story goes that a Korean from the Kingdom of *Kudara 百済 presented distilled liquor to Emperor Ōjin 応神, and composed the Soriko dance along with introducing the Cooker and Well Festival kamadomatsuri 竈祭り to ensure the gods blessing before brewing new sake 酒. Today the performance of Soriko is still associated with sake rituals.
Like the masks for *Ama 案摩, Soriko has triangular holes for the eyes and patternized eyebrows, cheeks, and beard. Although variations in decoration exist, Soriko's rounded beard, larger circlets filled with *tomoemon 巴文 decorating the cheeks, and the peaking eyebrows make this mask appear more aged than the Ama mask. Two "S" designs perhaps represent ears.