One day, I found a door abandoned in the school hallway. I was looking at and touching the door, thinking, "Is this the one used for the school festival? It's in the way," when the teacher told me to put it away. I had no choice but to carry the heavy door into the classroom, and while wondering what to do with it, I thought, "If I open the door like this, it might lead to where the girls are getting changed...!! What, are you kidding me?!" It was a mysterious door that could take you anywhere, to where the girls are getting changed, to the bathroom, or to a private toilet!!