Since the 1990s, Japan has experienced the rise of a phenomenon known as “lonely death” (kodokushi 孤独死): people who die alone and whose death goes unnoticed for a certain period of time. This has triggered public anxiety and moral panic because lonely death is often perceived as a form of “bad death” and a sign of the breakdown of family ties and neighborly relations. In the 2020s, this “feeling rule,” which associates lonely death with shame and fear, has quietly begun to be challenged by a group of post-mortem cleaning workers. By sharing their work experience and feelings through blogs, artworks, and books, the workers’ accounts of how they deal with the remnants of the deceased have turned the public perception of lonely death from an abstract, totalizing, fearful category into an understanding that such incidents have specific causes that can be faced and even prepared for. The cleaners’ emotional labor, especially their mourning for the dead, creates a sense of relatedness to the deceased, a feeling which is conveyed to the public through the cleaners’ narratives. The cleaners thereby change the feeling rules associated with the labor of dealing with the aftermath of a lonely death, turning it from “dirty work” into meaningful social action. This article contributes to an understanding of feeling rules by highlighting how individuals’ efforts, particularly, their reflections on their emotional labor, can change collective feeling rules.