The Mask That Loves to Count

The protagonist of the story is a mask that loves to count, whether it's the bustling customers in the store or the endless buying and selling, they are all its counting objects. Since this mask was bought home by dad, it has taken us to different places and experienced many "gifts". What kind of mask is this mask? And what experience made it from only enjoying counting, to feeling extremely honored even if it can't count in the future?