Manabu has secretly loved his childhood friend Makoto’s mother, Maki, for years. Once he is an adult, he confesses but is rejected, so he visits a brothel specializing in married women to forget her. To his shock, Maki is the woman who greets him. She initially asks him to choose someone else, but his desperate pleading convinces her to accept him as a customer and take his virginity. After that, Manabu loses all restraint, visiting her at work and pursuing her at home as they spend their days fucking and having creampie sex wherever they can.