The title pretty much says it all about this novella and its frank focus on female sexuality. The story unfolds from the perspective of a narrator whose life alone in Tokyo is disrupted when her older sister, Makiko, arrives from Osaka one summer with daughter Midoriko in tow, to stay for what turn out to be three tumultuous days. Makiko has been working as a club hostess to raise Midoriko since divorcing the girl's father, while Midoriko, now in elementary school, has stopped communicating except through written memos. Worn thin by her troubles, Makiko is in Tokyo this time to make herself over with a costly breast implant, although the narrator honestly cannot understand what her sister could be thinking. On the second day Makiko heads out alone for her procedure at a Ginza clinic, but is not seen again until late that night when she returns exhausted, saying she has been with Midoriko's father. Concern for her mother finally nudges Midoriko to begin talking again, and the two reaffirm their bond by throwing raw eggs at each other. One highlight of the tale comes on the first day, when the grown sisters sit together at the neighborhood bathhouse observing naked women of all ages; their exchange flows to the garrulous rhythms of Osaka speech, in the best tradition of such masters of the dialect as Akiyuki Nosaka and Ko Machida.
The accompanying short story, Anatatachi no ren'ai wa hinshi (No Hope for Your Romance), portrays the fleeting encounter between a young man handing out free tissues on a Shinjuku street corner and a young woman fantasizing about sex with a total stranger.