Upon inheriting his grandfather's coin laundromat, a middle-aged man, Akira Minato, gives up his former corporate life to run the well-loved coin laundry shop peacefully. One fine day, a high-school student by the name of Shintarō Katsuki enters the laundromat, and, despite the age difference between them, both Shintaro and Akira quickly become good friends. However, in an unexpected turn of events, Shinarto suddenly discovers that Akira is gay.