The narrator tells us that he's going to go to the fishmonger's shop to buy some poisonous fish. He's not sure how to poison the fish without tipping them off, but he does know that they're in the ocean, so he'll probably be able to poison them. The narrator then tells us what's been going on in the shop: Azusa is trying to eat an old man, and Hamasaki's looking for a new wife. The old man is a small, toothless fish called kituneuo, which is poisonous. The man who tried to get the fish says it's "rude" to spy on someone in the middle of a shopping trip, so the narrator decides to take the fish himself.