My Boss' Wife Is In A Marital Rut So I Took Her On A Midsummer Adultery Trip And Fucked Her Over And Over Shoko Takahashi (2020)

Takasho suspects the husband is having an affair and she goes to ask one of the husband’s subordinates, Kuro. She explains her laments and how she feels unappreciated and unattractive and ends up proposing a revenge affair with him.