Silent Smiles (One shot)

In our world, there are many kinds of smiles, there is a happy smile, there is a crazy smile, there is a spring inside smile, there is a forced smile, and there is a sad smile ... But there are also smiles that are .... Strange. Smiles even if you see them over and over again, you will never get bored .... Smiles no matter when .... You will never understand.