"Hot Day with a Broken Air Conditioner" is the title of this chapter. It's about a hot summer day in Yokohama, and the narrator is having sex with his childhood friend. He apologizes for being so immature, and says that he'll forgive him since he's sorry. The narrator tells the friend that he was the one who got "turned on" , and that he thinks it's cute that she's wearing a swimsuit. The two of them agree to go back to school together next year, and then the narrator will be a fourth-year student and the friend a fifth-year one. He says that if he doesn't earn enough credits to get into the university, he might have to do so again, and he suggests that they go to a school festival that's being held in alumni's houses the next day. He'll be working as a waitress, and they'll go to the school festival together. The school festival is on the very same day that the narrator has promised to meet up with his friend.