A hot spring trip for just the two of them, where they indulge in pleasure as they devote their lust to each other's bodies... Hatsune (Alias) is 53 years old and has been married for 21 years. "An acquaintance of mine, who is the same age as me, was having an affair. When I saw him cheating, I was jealous..." She first married a senior from her school days while working as a waitress at a local hot spring inn. She divorced her husband, who became addicted to gambling, at the age of 27. She remarried at the age of 33 to a supplier she met at the fish market where she worked. She currently works part-time at a Japanese restaurant. By chance, she witnesses an acquaintance having an affair... "Even at this age, my sexual desire hasn't disappeared." The mature wife, her desire ignited, is pleased at the sight of an erect penis, and screams in agony when it is inserted. Seeking further pleasure, she teases the man with obscene words, climaxing multiple times.