Miracle Polish by Steven Millhauser

The effect of the “Miracle Polish” lures the reader into reading the next page. The protagonist looks more attractive in the polished mirror, and so does his girlfriend, Monica.

　　Monica hates the effect. She wants him to look at her real self. Therefore, he destroys all the mirrors in the house one after another like a mad man. But contrary to the reader’s expectation, he is so persistent in asking how she liked the destruction of the mirrors; he asks her, “Are you happy?” He repeats the question again and again to the extent that he is obsessed.

Probably she will lose interest in him. That means: “This is the lucky day” turns out to be “This is the unlucky day.”

　　The story ends in the air.