On the passageway leading to the dormitory of a girls' high school, there is a staircase called an enchanted staircase. When everyone thinks that this staircase only has twenty-eight steps, the twenty-nineth step will suddenly appear. If you make a wish on the stairs, something unexpected will happen.
"1, 2, 3... 10, 11... 27, 28, 29 Ah..." A scream was accompanied by a gasp.