Daily WOW-transformation of a sumi

Why the sudden disappearance? Witnesses have realized the complexity of the situation as they have found Sumi's disappearing from their very eyes. One moment, they're in full colour; the next, they might as well have become  a part of the surroundings.
Because of this helpers of the cause to get the mascots under control have started taking pictures in black and white. See if this helps.
196 days