The busty wives appearing this time are Yuka, whose libido skyrocketed after giving birth and who now masturbates daily after putting her child to bed to relieve the frustration of a sexless marriage; Shiori, whose sex with her husband has drastically decreased since giving birth last year, and who gives the puzzling answer that "it's easier to have a second child after giving birth" is the reason? Shiori, who applied for the job because it was supposed to be a short-term job, but her real purpose seems to be something else; Mio, who has been raising her child alone since giving birth and whose husband has never helped her with childcare, is cheating on her; and Mio, who applied not only for financial reasons but also to get back at her husband... these are the three wives we will introduce.