It's a hot day in Yokohama, and the narrator is having sex with a childhood friend. He'd like to be a maid, but he's worried that the sex will make him look dirty. He tries to get her to put on her mini skirt, but she doesn't seem to want to do it. She's afraid that if she does, people will notice that she's wearing a skirt that's too short. She tries to rub the skirt with her fingers, but they won't do any good. Finally, she says, she'll put it in the skirt.