In Japan, Setsubun is the Day Before the Beginning of Spring. People Throw Soybeans Outside their House Wishing for Demons to go Out and Good Luck to go in. It's kind of a Traditional thing but you still see these 'Oni' (demon) Masks up and Around that Time of Year. This one is not so Symmetrical, so not Sure how it Would Work as a Mask, but it Could Still Work as a Symbolic image Representing that Holiday I guess or a Lopsided Mask. (I Drew this by Hand, if you're Wondering.)